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Organic Cotton Collection

The Organic Cotton Collection

Meet our most versatile, planet-friendly trousers yet.

Crafted from GOTS-certified organic cotton twill, this collection brings together soft structure, natural stretch, and hardwearing comfort—all in fits designed to move with you. Whether you're climbing, lounging, wandering, or working from wherever, there's a style in this range to suit your rhythm.

From the active-day performance of Margo and Nova to the laid-back utility of Johnson, Gaia Twill and Strider, each piece offers a fresh take on comfort, function and sustainable design.

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  • NEW DROP!

JOHNSON
3RD ROCK Johnson Organic Cotton Trousers - Jerome is 5ft 10" with a 31" waist & 38" hips. Here he is wearing a size 32RL.
JOHNSON
JOHNSON
3RD ROCK Johnson Stretch Twill Trousers - Jess is 5ft 8” with a  29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL.
3RD ROCK Johnson Trousers for hiking and lifestyle - Jess is 5ft 8” with a  29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL.
3RD ROCK Johnson Stretch Smart Trousers - Jerome is 5ft 10" with a 31" waist & 38" hips. Here he is wearing a size 32RL.
Our johnson trousers also feature our cheeky message on the fly opening!
3RD ROCK sustainable organic twill casual lifestyle trousers - Donald is 6ft1″  with a 30" waist, 36" hips & a 33" inseam and is wearing a size 30LL. M
3RD ROCK stretch trousers suitable for climbing and active lifestyle - Donald is 6ft1″  with a 30" waist, 36" hips & a 33" inseam and is wearing a size 30LL. M
3rd rock organic cotton twill trousers for active lifestyle - Donald is 6ft 1″ with a 30" waist, 36" hips & a 33" inseam and is wearing a size 30LL. M
3RD ROCK Johnson Organic Twill Sustainable Trousers - Jess is 5ft 8” with a  29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL.
Our orgnaic cotton Johnson trousers still features our signature stitched back pocket logo + a new utility side pocket. M
3rd rock organic cotton twill chino trousers - Jess is 5ft 8” with a 29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL. F
3RD ROCK Johnson Sustainable Cotton Trousers for climbing - Jerome is 5ft 10" with a 31" waist & 38" hips. Here he is wearing a size 32RL.
3rd rock organic cotton twill trousers for active lifestyle - Donald is 6ft 1″ with a 30" waist, 36" hips & a 33" inseam and is wearing a size 30LL. M
3rd rock organic cotton twill trousers for active lifestyle, M
3RD ROCK Johnson Stretch Twill Utility Trousers - Jess is 5ft 8” with a  29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL.
3RD ROCK sustainable organic twill stretch trousers - Donald is 6ft1″  with a 30" waist, 36" hips & a 33" inseam and is wearing a size 30LL. M
3RD ROCK Johnson Twill Trousers for Climbing and Active Outdoors - Jess is 5ft 8” with a  29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL.
3RD ROCK sustainable organic twill active stretch trousers - Donald is 6ft1″  with a 30" waist, 36" hips & a 33" inseam and is wearing a size 30LL. M
3RD ROCK Johnson Stretch Twill Nori Green Trousers - Jess is 5ft 8” with a  29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL.
A close up shot of the knee darts on our Johnson trousers, Designed to provide extra range of motion when you need it
3RD ROCK organic twill trousers for active lifestyle - Jess is 5ft 8” with a  29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL. F
Donald is 6ft 1″ with a 30" waist, 36" hips & a 33" inseam and is wearing a size 30LL. M
Are you wild inside like our Johnson trousers?
3rd rock organic cotton twill trousers for active lifestyle - Jess is 5ft 8” with a 29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL F

JOHNSON

Twill stretch trousers

 £90.00

JOHNSON

  • NEW DROP!

JOHNSON

  • NEW DROP!

GAIA TWILL
3RD ROCK Gaia Twill Organic Cotton Trousers - Jerome is 5ft 10" with a 31" waist & 38" hips. Here he is wearing a size 32RL.
GAIA TWILL
GAIA TWILL
3RD ROCK Gaia Twill organic relaxed fit trousers - Jess is 5ft 8” with a  29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL.
3RD ROCK Gaia Twill Organic Cotton Climbing and outdoor Trousers - Jerome is 5ft 10" with a 31" waist & 38" hips. Here he is wearing a size 32RL.
3RD ROCK Gaia Twill pruple relaxed trousers - Jess is 5ft 8” with a  29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL.
3RD ROCK Gaia Twill Stretch Active Trousers - Jerome is 5ft 10" with a 31" waist & 38" hips. Here he is wearing a size 32RL.
3RD ROCK Gaia Trousers for climbing and active people - Jerome is 5ft 10" with a 31" waist & 38" hips. Here he is wearing a size 32RL.
3RD ROCK Sustainable stretch relaxed fit twill trousers - Donald is 6ft1″  with a 30" waist, 36" hips & a 33" inseam and is wearing a size 30LL.
GAIA TWILL
3RD ROCK sustainable outdoor trousers for adventures
3RD ROCK Gaia organic stretch twill trousers - Jess is 5ft 8” with a  29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL.
GAIA TWILL
3RD ROCK Gaia Twill organic sustainable outdoor trousers - Jess is 5ft 8” with a  29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL.
Donald is 6ft 1″ with a 30" waist, 36" hips & a 33" inseam and is wearing a size 30LL
GAIA TWILL
3RD ROCK stretch twill climbing & active lifestyle trousers - Donald is 6ft1″  with a 30" waist, 36" hips & a 33" inseam and is wearing a size 30LL.
3RD ROCK Gaia Twill organic trousers for active lifestyles - Jess is 5ft 8” with a  29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL.
3RD ROCK Gaia organic cotton twill trousers - Jess is 5ft 8” with a  29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL.
Donald is 6ft 1″ with a 30" waist, 36" hips & a 33" inseam and is wearing a size 30LL
3RD ROCK Gaia Twill Stretch movement Trousers - Jerome is 5ft 10" with a 31" waist & 38" hips. Here he is wearing a size 32RL.
Jess is 5ft 8” with a 29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL
Jess is 5ft 8” with a 29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL

GAIA TWILL

Unisex relaxed twill trousers

 £90.00

GAIA TWILL

  • NEW DROP!

GAIA TWILL

  • NEW DROP!

MARGO
3RD ROCK Margo climbing and adventure trousers - Jerome is 5ft 10" with a 31" waist & 38" hips. Here he is wearing a size 32RL.
MARGO
MARGO
3RD ROCK Margo organic cotton climbing and adventure trousers - Jess is 5ft 8” with a  29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL.
3RD ROCK Margo organic cotton outdoor trousers - Jerome is 5ft 10" with a 31" waist & 38" hips. Here he is wearing a size 32RL.
MARGO
3rd rock margo trousers close up on our calf logo
MARGO
MARGO
3RD ROCK sustainable adventure margo trousers. F
3RD ROCK sustainable rock climbing trousers . F
MARGO
3rd rock sustainable outdoor margo trousers - Donald is 6ft 1″ with a 30" waist, 36" hips & a 33" inseam and is wearing a size 30LL. M
3RD ROCK Margo climbing and adventure trousers - Jess is 5ft 8” with a  29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL.
3RD ROCK Margo organic cotton adventure trousers - Jerome is 5ft 10" with a 31" waist & 38" hips. Here he is wearing a size 32RL.
3rd rock clothing margo pants - Donald is 6ft 1″ with a 30" waist, 36" hips & a 33" inseam and is wearing a size 30LL. M
MARGO
3rd rock outdoor clothing margo trousers in yellow - Jess is 5ft 8” with a 29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL. F
Becky climbing in the margo trousers. F
3rd rock clothing margo trousers unisex style in our shark colour - Donald is 6ft 1″ with a 30" waist, 36" hips & a 33" inseam and is wearing a size 30LL. M
MARGO
3RD ROCK Margo purple womens climbing trousers - Jess is 5ft 8” with a  29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL.
3rd rock clothing margo trousers - Jess is 5ft 8” with a 29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL. F
3rd rock clothing margo trousers in honey badger - Jess is 5ft 8” with a 29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL F
3rd rock clothing margo trousers for active lifestyles - Donald is 6ft 1″ with a 30" waist, 36" hips & a 33" inseam and is wearing a size 30LL. M
MARGO

MARGO

Performance stretch twill trouser

+1

+ More options

 £80.00

MARGO

  • NEW DROP!

MARGO

  • REINFORCED 💪

Donald is 6ft 1″ with a 30" waist, 36" hips & a 33" inseam and is wearing a size 30LL Aaliyah is 5ft 8" with a 26" waist, 35" hips & a 33" inseam and is wearing a size 26RL
3rd rock clothing reinforced nova climbing trousers - Donald is 6ft 1″ with a 30" waist, 36" hips & a 33" inseam and is wearing a size 30LL. M
3rd rock clothing organic cotton nova trousers - Jess is 5ft 8” with a 29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL. F
Nova reinforced trousers for climbing and adventure. M
3rd rock clothing nova climbing in yellow honey badget - Donald is 6ft 1″ with a 30" waist, 36" hips & a 33" inseam and is wearing a size 30LL. M
3rd rock clothing reinforced oragnic cotton nova trousers - Jess is 5ft 8” with a 29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL. F
3rd rock clothing nova trousers - Donald is 6ft 1″ with a 30" waist, 36" hips & a 33" inseam and is wearing a size 30LL. M
3rd rock clothing reinforced nova climbing trousers perfect for outdoor adventures. M
3rd rock clothing reinforced nova outdoor adventure trousers - Aaliyah is 5ft 8" with a 26" waist, 35" hips & a 33" inseam and is wearing a size 26RL. F
3rd rock clothing reinforced nova climbing trousers - Donald is 6ft 1″ with a 30" waist, 36" hips & a 33" inseam and is wearing a size 30LL. M
3rd rock nova trousers in our navy blue shark colourway - Donald is 6ft 1″ with a 30" waist, 36" hips & a 33" inseam and is wearing a size 30LL. M
A look at our back pocket & embroidered thigh logo for the Nova trousers
3rd rock nova reinforced climbing trousers in teal green Ivy colour - Donald is 6ft 1″ with a 30" waist, 36" hips & a 33" inseam and is wearing a size 30LL. M
3rd rock clothing reinforced nova trousers - Aaliyah is 5ft 8" with a 26" waist, 35" hips & a 33" inseam and is wearing a size 26RL. F
3rd rock clothing nova climbing trousers in shark colourway - Donald is 6ft 1″ with a 30" waist, 36" hips & a 33" inseam and is wearing a size 30LL. M
A close up showing our embroidered logo on our nova trousers
A close up photo of our calf printed logo
3rd rock clothing reinforced nova climbing trousers - Jess is 5ft 8” with a 29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL. F
A close up look at our reinforced knee patches featuring double knee darts for a full range of motion.
3rd rock nova unisex trousers in navy blue - Jess is 5ft 8” with a 29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL. F
A close up photo showing our printed calf logo on the honey badger yellow nova trousers

NOVA

Reinforced adventure trousers

 £80.00

NOVA

  • REINFORCED 💪

NOVA
3RD ROCK stretchy cargo trousers for climbing and active lifestyles - Donald is 6ft1″  with a 30" waist, 36" hips & a 33" inseam and is wearing a size 32LL. Jess is 5ft 8” with a 29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL.
3RD ROCK stretchy cargo trousers for rock climbing and casual lifestyle - Jess is 5ft 8” with a 29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL.
3RD ROCK stretchy cargo trousers for climbing - Donald is 6ft1″  with a 30" waist, 36" hips & a 33" inseam and is wearing a size 32LL.
3RD ROCK sustainable brown khaki cargo trousers - Jess is 5ft 8” with a  29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL.
STRIDER
3RD ROCK organic cotton cargo trousers - Donald is 6ft1″  with a 30" waist, 36" hips & a 33" inseam and is wearing a size 32LL.
STRIDER
3RD ROCK sustainable navy blue cargo trousers - Jess is 5ft 8” with a  29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL.
3RD ROCK cargo trousers in our camel brown colour - Jess is 5ft 8” with a 29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL.
STRIDER
STRIDER
3RD ROCK navy blue cargo pocket trousers - Jess is 5ft 8” with a  29" waist, 38" hips & a 32.5" inseam and is wearing a size 28RL.
3RD ROCK sustainable cargo trousers for hiking and outdoor adventure.
3RD ROCK sustainable navy blue cargo trousers - Donald is 6ft1″  with a 30" waist, 36" hips & a 33" inseam and is wearing a size 32LL.
3RD ROCK organic cotton cargo utility trousers for climbing or hiking - Donald is 6ft1″  with a 30" waist, 36" hips & a 33" inseam and is wearing a size 32LL.
STRIDER

STRIDER

Organic cotton cargo trousers

 £90.00

STRIDER

STRIDER

  • ❤ UNISEX

3RD ROCK Clothing MARGO Adventure ready trousers - Kendal is 5ft 7" with a 28" waist, 38" hips and wears a size 30/RL Oliver is 6ft 2" with a 34" waist, 40" hips and wears a 34/LL
MARGO
MARGO Adventure Trousers | Organic Cotton Outdoor Trousers | 3RD ROCK Clothing - Oliver is 6ft 2" with a 34" waist, 40" hips and wears a 34/LL M M
3RD ROCK Margo Trousers Ebony - Kendal is 5ft 7" with a 28" waist, 38" hips and wears a size 30/RL. F
MARGO Adventure Trousers | Organic Cotton Outdoor Trousers | 3RD ROCK Clothing - Kendal is 5ft 7" with a 28" waist, 38" hips and wears a size 30/RL. F
MARGO Adventure Trousers | Organic Cotton Outdoor Trousers | 3RD ROCK Clothing. F
MARGO
MARGO
MARGO Adventure Trousers | Organic Cotton Outdoor Trousers | 3RD ROCK Clothing - Oliver is 6ft 2" with a 34" waist, 40" hips and wears a 34/LL M M
MARGO
MARGO Adventure Trousers | Organic Cotton Outdoor Trousers | 3RD ROCK Clothing - Kendal is 5ft 7" with a 28" waist, 38" hips and wears a size 30/RL. F
MARGO
MARGO Adventure Trousers | Organic Cotton Outdoor Trousers | 3RD ROCK Clothing - Oliver is 6ft 2" with a 34" waist, 40" hips and wears a 34/LL M M
MARGO
MARGO Adventure Trousers | Organic Cotton Outdoor Trousers | 3RD ROCK Clothing - M
MARGO
MARGO Adventure Trousers | Organic Cotton Outdoor Trousers | 3RD ROCK Clothing - Kendal is 5ft 7" with a 28" waist, 38" hips and wears a size 30/RL F F

MARGO

Organic Cotton Ready for Anything Trousers

+ More options

 £80.00

MARGO

  • ❤ UNISEX

MARGO

  • On Sale

  • 💪 REINFORCED

SUPERNOVA | Reinforced Oragnic Stretch Trousers | 3RD ROCK Clothing - Kendal is 5ft 7" with a 28" waist, 38" hips and wears a size 30/RL Oliver is 6ft 2" with a 34" waist, 40" hips and wears a 34/LL
SUPERNOVA
SUPERNOVA | Reinforced Oragnic Stretch Trousers | 3RD ROCK Clothing - Kendal is 5ft 7" with a 28" waist, 38" hips and wears a size 30/RL F
SUPERNOVA
SUPERNOVA
SUPERNOVA | Reinforced Oragnic Stretch Trousers | 3RD ROCK Clothing - Oliver is 6ft 2" with a 34" waist, 40" hips and wears a 34/LL M
SUPERNOVA
SUPERNOVA | Reinforced Oragnic Stretch Trousers | 3RD ROCK Clothing - Kendal is 5ft 7" with a 28" waist, 38" hips and wears a size 30/RL F
SUPERNOVA
SUPERNOVA | Reinforced Oragnic Stretch Trousers | 3RD ROCK Clothing - Kendal is 5ft 7" with a 28" waist, 38" hips and wears a size 30/RL F
SUPERNOVA
SUPERNOVA | Reinforced Oragnic Stretch Trousers | 3RD ROCK Clothing - Oliver is 6ft 2" with a 34" waist, 40" hips and wears a 34/LL M
SUPERNOVA
SUPERNOVA | Reinforced Oragnic Stretch Trousers | 3RD ROCK Clothing - Oliver is 6ft 2" with a 34" waist, 40" hips and wears a 34/LL M
SUPERNOVA | Reinforced Oragnic Stretch Trousers | 3RD ROCK Clothing - Kendal is 5ft 7" with a 28" waist, 38" hips and wears a size 30/RL F
SUPERNOVA
SUPERNOVA | Reinforced Oragnic Stretch Trousers | 3RD ROCK Clothing - Oliver is 6ft 2" with a 34" waist, 40" hips and wears a 34/LL M
SUPERNOVA | Reinforced Oragnic Stretch Trousers | 3RD ROCK Clothing - Oliver is 6ft 2" with a 34" waist, 40" hips and wears a 34/LL M

SUPERNOVA

Reinforced Organic Stretch Trousers

+ More options

 £45.00 £90.00

SUPERNOVA

  • On Sale

  • 💪 REINFORCED

SUPERNOVA

  • On Sale

MARGO TROUSERS | Organic Cotton Climbing Trousers | 3RD ROCK Clothing - Laura is 5ft 6 with a 31" waist, 43" hips and wears a size 32/RL. Billy is 5ft 11 with a 30" waist, 37" hips and wears a 30/RL.
MARGO TROUSERS | Organic Cotton Climbing Trousers | 3RD ROCK Clothing - Laura is 5ft 6 with a 31" waist, 43" hips and wears a size 32/RL F
MARGO TROUSERS | Organic Cotton Climbing Trousers | 3RD ROCK Clothing - Sophie is 5ft 9 with a 34" waist, 42" hips and wears a size 34/RL F
MARGO TROUSERS | Organic Cotton Climbing Trousers | 3RD ROCK Clothing - Kendal is 5ft 7 with a 28" waist, 38" hips and wears a size 30/RL F
MARGO
MARGO TROUSERS | Organic Cotton Climbing Trousers | 3RD ROCK Clothing - Sophie is 5ft 9 with a 40.5" bust and wears a size L F
MARGO TROUSERS | Organic Cotton Climbing Trousers | 3RD ROCK Clothing - Billy is 5ft 11 with a 30" waist, 37" hips and wears a 30/RL M
MARGO
MARGO TROUSERS | Organic Cotton Climbing Trousers | 3RD ROCK Clothing - Laura is 5ft 6 with a 31" waist, 43" hips and wears a size 32/RL F
MARGO TROUSERS | Organic Cotton Climbing Trousers | 3RD ROCK Clothing - Billy is 5ft 11 with a 30" waist, 37" hips and wears a 30/RL. M
MARGO TROUSERS | Organic Cotton Climbing Trousers | 3RD ROCK Clothing - Kendal is 5ft 7 with a 28" waist, 38" hips and wears a size 30/RL F
MARGO TROUSERS | Organic Cotton Climbing Trousers | 3RD ROCK Clothing - Laura is 5ft 6 with a 31" waist, 43" hips and wears a size 32/RL F
MARGO TROUSERS | Organic Cotton Climbing Trousers | 3RD ROCK Clothing - Kendal is 5ft 7 with a 28" waist, 38" hips and wears a size 30/RL F

MARGO

High Rise Organic Cotton Ready for Anything Trousers

+ More options

 £63.00 £90.00

MARGO

  • On Sale

MARGO

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