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CUSTOMER REVIEWS
- Would you recommend 3RD ROCK to your friends? 5- Yes, very much 1 - No, not at all2345- Yes, very much
- Reviews
- Questions
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- SWEAT TYPE Climbing
- BODY TYPE SlimAthletic
- LOCATION Dorset
- AGE 25-34
- SIZE PURCHASED XS
- Would you recommend 3RD ROCK to your friends? 1 - No, not at all2345- Yes, very much
New favourite trousers!
I was convinced I would never be converted back to climbing trousers after living in my Gaias since they came out, but these are ridiculous! So comfy and flattering. Super light weight, perfect for Autumn climbing and I love the mid thigh pocket, fits an iPhone 13 mini when trad climbing. As always, you smashed it 3rd Rock. Just make sure you size up as slimmer fit than my usual 3rd Rock bottoms.

- SWEAT TYPE Generalist / Other
- BODY TYPE Slim
- LOCATION Middlesex
- AGE 45-54
- SIZE PURCHASED S
- Would you recommend 3RD ROCK to your friends? 1 - No, not at all2345- Yes, very much
Men’s Hiro shorts - great
Can wear these shorts with anything and for everything. Great fit. Looks great. Very pleased. Think i might buy another pair…

- SWEAT TYPE ClimbingYoga
- BODY TYPE Athletic
- LOCATION Cape Town, South Africa
- AGE 18-24
- SIZE PURCHASED M
- Would you recommend 3RD ROCK to your friends? 1 - No, not at all2345- Yes, very much
Best pants ever
Amazing!! These are the best trousers (pants if you’re South African) I’ve ever used! They’re stretchy in all the right places and are actually surprisingly durable! I use them mainly for climbing, but I use them for yoga too and have started wearing them out cause they’re so snazzy!

- SWEAT TYPE Climbing
- BODY TYPE Athletic
- LOCATION Baildon
- AGE 45-54
- SIZE PURCHASED S
- Would you recommend 3RD ROCK to your friends? 1 - No, not at all2345- Yes, very much
Hiro to Hero
These are my favourite shorts! They fit a bit small in the leg so went a size up to normal but the draw string waist takes care of the size adjustment just fine. They go a long time between washes and a comfortable for training and general home working / hanging out in the house. Decent practical pockets too.

- SWEAT TYPE Generalist / Other
- BODY TYPE Other
- LOCATION Norfolk
- AGE 55
- SIZE PURCHASED L
- Would you recommend 3RD ROCK to your friends? 1 - No, not at all2345- Yes, very much
My go-to shorts
I was a bit unsure about wearing ‘plastic’ pants but we have become inseparable this summer - from home/office to the garden and beyond
Sizing Charts
Select Category
Find Size Chart For:
Size | Chest/Bust | Underbust | Waist |
---|---|---|---|
XXS/UK 6 | 30 | 24-26 | 24 |
XS/UK 8 | 32 | 26-28 | 26 |
S/UK 10 | 34 | 28-30 | 28 |
M/UK 12 | 36 | 30-32 | 30 |
L/UK 14 | 38 | 32-34 | 32 |
XL/UK 16 | 40 | 34-36 | 34 |
XXL/UK 18 | 42 | 36-38 | 36 |
How to Measure

BRA TOPS - If you cup size is particularly large but your underbust is not. we suggest going one underbust size larger maximum, as the elastic must not be too loose.
Please see individual product page description for more detailed information
Size | Chest/Bust | Underbust | Waist |
---|---|---|---|
XXS/UK 6 | 76.5 | 61-66 | 61 |
XS/UK 8 | 81.6 | 66-71 | 66 |
S/UK 10 | 86.7 | 71-76 | 71 |
M/UK 12 | 91.7 | 76-81.5 | 76 |
L/UK 14 | 96.8 | 81.5-86.5 | 81 |
XL/UK 16 | 101.9 | 86.5-91.5 | 86 |
XXL/UK 18 | 107.0 | 91.5-96.5 | 91 |
How to Measure

BRA TOPS - If you cup size is particularly large but your underbust is not. we suggest going one underbust size larger maximum, as the elastic must not be too loose.
Please see individual product page description for more detailed information
PREVIOUSLY LABELLED | New Size Label | Waist | Hips | Short Inseam (SL) | Regular Inseam (RL) | Long Inseam (LL) |
---|---|---|---|---|---|---|
XXS | 24"/UK 6 | 24 | 33 | 30 | 32 | 34 |
XS | 26"/UK 8 | 26 | 35 | |||
S | 28"/UK 10 | 28 | 37 | |||
M | 30"/UK 12 | 30 | 39 | |||
L | 32"/UK 14 | 32 | 41 | |||
XL | 34"/UK 16 | 34 | 43 | |||
XXL | 36"/UK 18 | 36 | 45 |
How to Measure

BRA TOPS - If you cup size is particularly large but your underbust is not. we suggest going one underbust size larger maximum, as the elastic must not be too loose.
Please see individual product page description for more detailed information
PREVIOUSLY LABELLED | NEW SIZE LABEL | Waist | Hips | Short Inseam (SL) | Regular Inseam (RL) | Long Inseam (LL) |
---|---|---|---|---|---|---|
XXS | 24"/UK 6 | 61 | 84 | 76.2 | 81.3 | 86.4 |
XS | 26"/UK 8 | 66 | 89.1 | |||
S | 28"/UK 10 | 71.2 | 94.2 | |||
M | 30"/UK 12 | 76.2 | 99.2 | |||
L | 32"/UK 14 | 81.3 | 104.3 | |||
XL | 34"/UK 16 | 86.4 | 109.4 | |||
XXL | 36"/UK 18 | 91.5 | 114.5 |
How to Measure

BRA TOPS - If you cup size is particularly large but your underbust is not. we suggest going one underbust size larger maximum, as the elastic must not be too loose.
Please see individual product page description for more detailed information
Find Size Chart For:
Size | Chest/Bust | Waist |
---|---|---|
XXS | 33 | 26 |
XS | 35 | 28 |
S | 37 | 30 |
M | 39 | 32 |
L | 41 | 34 |
XL | 43 | 36 |
XXL | 45 | 38 |
How to Measure

Size | Chest/Bust | Waist |
---|---|---|
XXS | 84 | 66 |
XS | 88.9 | 71.1 |
S | 94.0 | 76.2 |
M | 99.1 | 81.3 |
L | 104.1 | 86.4 |
XL | 109.2 | 91.4 |
XXL | 114.3 | 96.5 |
How to Measure

Size | Waist | Hips | Short Inseam (SL) | Regular Inseam (RL) | Long Inseam (LL) |
---|---|---|---|---|---|
26"/XXS | 26 | 32 | 30 | 32 | 34 |
28"/XS | 28 | 34 | |||
30"/S | 30 | 36 | |||
32"/M | 32 | 38 | |||
34"/L | 34 | 40 | |||
36"/XL | 36 | 42 | |||
38"/XXL | 38 | 44 |
How to Measure

Size | Waist | Hips | Inseam Short (SL) | Inseam Regular (RL) | INSEAM LONG (LL) |
---|---|---|---|---|---|
26"/XXS | 66.0 | 81.3 | 76.2 | 81.3 | 86.4 |
28"/XS | 71.1 | 86.4 | |||
30"/S | 76.2 | 91.4 | |||
32"/M | 81.3 | 96.5 | |||
34"/L | 86.4 | 101.6 | |||
36"/XL | 91.4 | 106.7 | |||
38"/XXL | 95.5 | 111.8 |
How to Measure

Find Size Chart For:
AGE | CHEST | WAIST | HIPS | INSEAM | HEIGHT |
---|---|---|---|---|---|
7-8 | 25 | 22.5 | 29 | 23.5 | 47 |
9-10 | 27.0 | 23.5 | 31 | 25.6 | 50 |
11-13 | 29.5 | 24 | 33 | 27.8 | 54 |
WOMEN'S XXS/UK 6 | 30 | 24 | 33 | 30 |
AGE | CHEST | WAIST | HIPS | INSEAM | HEIGHT |
---|---|---|---|---|---|
7-8 | 63.5 | 57.2 | 73.7 | 59.7 | 119.4 |
9-10 | 68.6 | 59.7 | 78.7 | 65.0 | 127.0 |
11-13 | 74.9 | 61.0 | 83.8 | 70.6 | 137.2 |
WOMEN'S XXS/UK 6 | 76.2 | 61.0 | 83.8 | 76.2 |
AGE | CHEST | WAIST | HIPS | INSEAM | HEIGHT |
---|---|---|---|---|---|
7-8 | 25 | 23 | 28 | 23.5 | 50 |
9-10 | 27.0 | 24.5 | 29.5 | 25.6 | 54 |
11-13 | 29.5 | 26 | 31.5 | 27.8 | 59 |
MEN'S XXS | 33 | 26 | 32 | 30 |
AGE | CHEST | WAIST | HIPS | INSEAM | HEIGHT |
---|---|---|---|---|---|
7-8 | 63.5 | 58.4 | 71.1 | 59.7 | 127.0 |
9-10 | 68.6 | 62.2 | 74.9 | 65.0 | 137.2 |
11-13 | 74.9 | 66.0 | 80.0 | 70.6 | 149.9 |
MEN'S XXS | 83.8 | 66.0 | 81.3 | 76.2 |