CUSTOMER REVIEWS
- Would you recommend 3RD ROCK to your friends? 5- Yes, very much 1 - No, not at all2345- Yes, very much
- Reviews
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- SWEAT TYPE ClimbingYogaGeneralist / Other
- BODY TYPE Other
- LOCATION Cumbria
- AGE 25-34
- SIZE PURCHASED M
- How would you rate the fit? Fits a bit small
- Would you recommend 3RD ROCK to your friends? 1 - No, not at all5 - Yes, very much
Great leggings, run slightly small
I'm usually a size 10 so I bought a size that reflected that. Had to return and get the size up as they were slightly too snug. The return process was really easy and the communication was brilliant. I love the leggings, they are thick (great for colder months) and feel sturdy.

- SWEAT TYPE Running
- BODY TYPE Curvey
- LOCATION London
- AGE 35-44
- SIZE PURCHASED M
- How would you rate the fit? Fits just right
- Would you recommend 3RD ROCK to your friends? 1 - No, not at all5 - Yes, very much
Love the leggings
Lovely material, the fit is really good and they’re generally comfortable to wear for all types of activities as they are very flexible.

- SWEAT TYPE ClimbingRunningGeneralist / Other
- BODY TYPE CurveyAthleticOther
- LOCATION London Town
- AGE 35-44
- SIZE PURCHASED XL
The super not so abrasion resistant but skin saving leggings
I started cycling with these leggings on my daily commute in Jan. The weather turned minus 2ish and the leggings performed well. Even if , after one week I hit the deck off my bike - they are not so abrasion resistant anymore - the double skin saved my knees from much worse. Now to patch them up and keep on 3rdRocking…

Strong Leggings
Have been looking for “tough” leggings for a year or so, finally I got these and love them. No more snags from scrambling about and super stretchy so I don’t feel constricted.

- SWEAT TYPE ClimbingYogaDancer
- BODY TYPE CurveyLean
- LOCATION Dorset
- AGE 25-34
- SIZE PURCHASED M
- Would you recommend 3RD ROCK to your friends? 1 - No, not at all2345- Yes, very much
Another banging pair of leggings.
I always choose 3rd Rock for leggings- for style and comfort. I love that I always stand out at the crag and they’re going to be comfy on those long days. My first pair of 3rd Rock leggings had the abrasion patches so I love the throwback on these. And the fact that I know my knobbly knees aren’t going to be ripped to shreds! 10/10 tell all my friends to wear 3rd Rock.
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 |