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- SWEAT TYPE ClimbingGeneralist / Other
- BODY TYPE Muscular
- LOCATION Bristol
- AGE 25-34
- SIZE PURCHASED M
- Would you recommend 3RD ROCK to your friends? 1 - No, not at all2345- Yes, very much
Bought these for my brother as a Christmas present. Low key asked for his size a few months before to make sure that I got the right measurements and size from the chart. Sadly when he tried them on they were a bit too tight for his liking (personal preference). So I returned them to 3rd Rock with a request for an exchange. I was sent an exchange code for the same amount I initially paid for the trousers and just had to cover shipping, which was completely fair. I have bought climbing clothes from 3rd rock in the past and loved them, but this was my first return/exchange experience, and it was very positive.

- SWEAT TYPE ClimbingGeneralist / Other
- BODY TYPE Slim
- LOCATION Darlington
- AGE 35-44
- SIZE PURCHASED XS
- Would you recommend 3RD ROCK to your friends? 1 - No, not at all2345- Yes, very much
These Jeans and the other pair of rock trousers I bought are excellent. I’m 5’10’ and 58 kg so not the bulkiest of people. I’ve worn them on a family hike in a pouring rain and wind and climbed a 7b slab in them at the wall. Smart enough to ware everyday but stretchy enough to climb and hike in. Normally wear a 28” waist and 30 to 32” inch leg these fitted perfectly.

- SWEAT TYPE Climbing
- BODY TYPE Athletic
- LOCATION UK
- AGE 35-44
- SIZE PURCHASED XL
- Would you recommend 3RD ROCK to your friends? 1 - No, not at all2345- Yes, very much
Being tall, most climbing pants tend to be short and tight. These are a breath of fresh air - very comfortable.

- SWEAT TYPE Climbing
- BODY TYPE Athletic
- LOCATION England
- AGE 25-34
- SIZE PURCHASED M
- Would you recommend 3RD ROCK to your friends? 1 - No, not at all2345- Yes, very much
I got a pair of these lightweight mercury climbing trousers just before a sport climbing trip to Bulgaria. They're durable, breathable, stretchy and comfortable. And you wouldn't look out of place heading into town for fancy dinner in these trousers. 10/10. Nice one 3rd Rock!

- SWEAT TYPE Climbing
- BODY TYPE Muscular
- LOCATION Sheffield
- AGE 25-34
- SIZE PURCHASED XL
- Would you recommend 3RD ROCK to your friends? 1 - No, not at all2345- Yes, very much
Ideal for climbing !
Sizing Charts
Select Category
Find Size Chart For:
Size | Chest/Bust | Underbust | Waist |
---|---|---|---|
xs | 32 | 25 | 25 |
s | 34 | 27 | 27 |
m | 36 | 29 | 29 |
l | 38 | 31 | 31 |
xl | 40 | 33 | 33 |
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 |
---|---|---|---|
xs | 81 - 83.5 | 63 - 67 | 63 - 65.5 |
s | 86 - 88.5 | 68 - 72 | 68 - 70.5 |
m | 91.5 - 94 | 73 - 77 | 73 - 75.5 |
l | 96 - 98.5 | 78 - 82 | 78 - 80.5 |
xl | 101 - 103.5 | 83 - 87 | 83 - 85.5 |
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
Size | Waist | Hips | Short Inseam | Regular Inseam |
---|---|---|---|---|
xs | 25 | 35 | 30 - 32 | 32 - 34 |
s | 27 | 37 | ||
m | 29 | 39 | ||
l | 31 | 41 | ||
xl | 33 | 43 |
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 | Waist | Hips | Short Inseam | Regular Inseam |
---|---|---|---|---|
xs | 63 - 65.5 | 89 - 92.5 | 76 - 81 | 81 - 86 |
s | 68 - 70.5 | 94 - 97.5 | ||
m | 73 - 75.5 | 99 - 102.5 | ||
l | 78 - 80.5 | 104 - 107.5 | ||
xl | 83 - 85.5 | 109 - 112.5 |
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
Size | Chest | Waist | Hips | Short Inseam | Regular Inseam |
---|---|---|---|---|---|
xs | 35 | 28 | 34 | 30 - 32 | 32 - 34 |
s | 37 | 30 | 36 | ||
m | 39 | 32 | 38 | ||
l | 41 | 34 | 40 | ||
xl | 43 | 36 | 42 |
How to Measure

Size | Chest | Waist | Hips | Short Inseam | Regular Inseam |
---|---|---|---|---|---|
xs | 89 | 71 - 73.5 | 86 - 89.5 | 76 - 81 | 81 - 86 |
s | 94 | 76 - 78.5 | 91 - 94.5 | ||
m | 99 | 81 - 83.5 | 96 - 99.5 | ||
l | 104 | 86 - 88.5 | 101 - 104.5 | ||
xl | 109 | 91.5 - 94 | 106 - 109.5 |
How to Measure
