Size Guide

Clothing Size Chart
UK Measurements 6 / XXS 8 / XS 10 / S 12 / M 14 / L 16 - 18 / XL 18 - 20 / XXL
  cms inches cms inches cms inches cms inches cms inches cms inches cms inches
Bust 77 30 82 32 87 34 92 36 97 38 102 40 109 43
Waist 59 23 64 25 69 27 74 29 79 31 84 33 91 36
Hips 86 34 91 36 96 38 101 40 106 42 111 44 118 46.5
Conversion Chart
Sweaty Betty Size UK US EU AU
XXS 6 2 34 6
XS 8 4 36 8
S 10 6 38 10
M 12 8 40 12
L 14 10 42 14
XL 16 - 18 12 - 14 44 16
XXL 18 - 20 14 - 16 46 18

For further information and advice, contact Customer Care here, or book a session with our virtual Personal Shopper for help on finding the best activewear pieces for you. Find out more here.

Hint: For the most accurate results, measure yourself in your underwear.

  • Chest: Measure around the fullest part of your chest, keeping tape firmly under your armpits and around your shoulder blades.
  • Waist: Measure around your waist, slightly below your natural waist, where you normally wear your pants. Insert your forefinger between the tape and your body to allow ease in fit.
  • Hip: Measure around the fullest part of your hips, inserting your forefinger between the tape and your hip to allow ease in fit.
  • Inseam: Measure a similar pant that fits you well. Measure along the inseam, from the crotch seam to the bottom of the hem.
  • Tip: If you are 5'4" or under, we recommend trying 7/8 as full length.

Doesn't Fit?

If the fit is not perfect, return it within 45 days, as long as it's unworn, unwashed and unaltered.

See returns policy.

Between Sizes?

If your measurements are in between those listed in the size chart, pick the next size up.

Inseam Leggings (Excluding High Shine) All Sizes
  cms inches
Capri 43 17
Crop (just below the knee) 50 17
7/8th (just above ankle) 60 24
Full Length (just above trainers) 68 27
Inseam High Shine Leggings All Sizes
  cms inches
7/8th (just above ankle) 62 24.5
Full Length (just above trainers) 70 27.5
Inseam Gary's All Sizes
  cms inches
Capri 61 24
Short 67 26
Regular 81 32
Conversion Chart
Sweaty Betty Size UK US EU AU
XXS 6 2 34 6
XS 8 4 36 8
S 10 6 38 10
M 12 8 40 12
L 14 10 42 14
XL 16 - 18 12 - 14 44 16
XXL 18 - 20 14 - 16 46 18

Please note, the measurements of some of our seasonal trousers and joggers may vary, please check the individual product pages for full details or alternatively contact Customer Care here, or book a session with our virtual Personal Shopper for more help and advice. Find out more here.

Hint: For the most accurate results, measure yourself in your underwear.

  • Waist: Measure around your waist, slightly below your natural waist, where you normally wear your pants. Insert your forefinger between the tape and your body to allow ease in fit.
  • Hip: Measure around the fullest part of your hips, inserting your forefinger between the tape and your hip to allow ease in fit.
  • Inseam: Measure a similar pant that fits you well. Measure along the inseam, from the crotch seam to the bottom of the hem.
  • Tip: If you are 5'4" or under, we recommend trying 7/8 as full length.

Doesn't Fit?

If the fit is not perfect, return it within 45 days, as long as it's unworn, unwashed and unaltered.

See returns policy.

Between Sizes?

If your measurements are in between those listed in the size chart, pick the next size up.

Cup Size to Alpha Size Conversion Chart
Bra Size 30 32 34 36 38 40 42 44
A XS XS S M L L XXL XXXL
B XS XS S M L XL XXL XXXL
C XS S S M L XL XXL XXXL
D S S M L L XL XXL No options available
DD S S M L XL XXL XXXL No options available
E S M L XL XL XXL XXXL No options available
F S M L XL XL XXL XXXL No options available
International Underband Conversion Chart
UK 30 32 34 36 38
US 30 32 34 36 38
EU 65 70 75 80 85
Australia 8 10 12 14 16
France 80 85 90 95 100
Italy 0 1 2 3 4
International Cup Conversion Chart
UK A B C D DD E F
US A B C D DD/E DDD/F G
EU A B C D DD E F
Australia A B C D DD E F
Germany A B C D E/DD F G
France A B C D E F G
Italy A B C D DD E F

Please note, this is an approximate size conversion guide. For further information and advice, contact Customer Care here, or book a session with our virtual Personal Shopper for help on finding the best activewear pieces for you. Find out more here.

Doesn't fit?

If the fit is not perfect, return it within 45 days, as long as it's unworn, unwashed and unaltered.

See returns policy.

Not sure what your bra size is?

Try our Bra Measurement Guide.

Asics Size Guide
UK 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9
US 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11
EU 35.5 36 37 37.5 38 39 39.5 40 40.5 41.5 42 42.5 43.5
AU 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11
New Balance Size Guide
UK 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9
US 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11
EU 35 36 36.5 37 37.5 38 39 40 40.5 41 41.5 42.5 43
AU 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11
On Running Size Guide
UK 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9
US 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11
EU 36 36.5 37 37.5 38 38.5 39 40 40.5 41 42 42.5 43
AU 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11
Veja Size Guide
UK 3 4 5 6 7 8
US 5 6 7 8 9 10
EU 36 37 38 39 40 41
Length (cm) 23.9 24.5 25.2 25.8 26.3 27
Width (cm) 8.2 8.4 8.4 8.6 8.9 9
Sorel Boots Size Guide
UK 4 5 6 7 8 9
US 6 7 8 9 10 11
EU 37 38 39 40 41 42
AU 6 7 8 9 10 11
Birkenstock Size Guide
UK 3.5 4.5 5 5.5 7 7.5
US 5 6 7 8 9 10
EU 36 37 38 39 40 41
AU 5 6 7 8 9 10
Yoko Size Guide
UK 3-3.5 4-5 6-6.5 7-8
US 5-5.5 6.6-7.5 8-9 9.5-10
EU 35/36 37/38 39/40 41/42
CM 22-23 24-25 25.5-26 26.5-27.5
Hoka Size Guide
UK 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5
US 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11
EU 36 36 2/3 37 1/3 38 38 2/3 39 1/3 40 40 2/3 41 1/3 42 42 2/3 43 1/3 44
CM 22 22.5 23 23.5 24 24.5 25 25.5 26 26.5 27 27.5 28

For further information and advice, contact Customer Care here, or book a session with our virtual Personal Shopper for help on finding the best activewear pieces for you. Find out more here.

Doesn't Fit?

If the fit is not perfect, return it within 45 days, as long as it's unworn, unwashed and unaltered.

See returns policy.

Between Sizes?

If your measurements are in between those listed in the size chart, pick the next size up.

Size Guide

Leggings Size Guide

Leggings Size Chart

UK Sizes 6 / XXS 8 / XS 10 / S 12 / M 14 / L 16-18 / XL 18-20 / XXL
cm inches cm inches cm inches cm inches cm inches cm inches cm inches
Waist 59 23 64 25 69 27 74 29 79 31 84 33 91 36
Hips 86 34 91 36 96 38 101 40 106 42 111 44 118 46.5
Inseam Leggings (Excluding High Shine) cm inches
Capri 43 17
Crop (just below the knee) 50 17
7/8th (just above ankle) 60 24
Full Length (just above trainers) 68 27
Inseam High Shine Leggings cm inches
7/8th (just above ankle) 62 24.5
Full Length (just above trainers) 70 27.5

Trousers Size Guide

Trousers Size Chart

UK Sizes 6 / XXS 8 / XS 10 / S 12 / M 14 / L 16-18 / XL 18-20 / XXL
cm inches cm inches cm inches cm inches cm inches cm inches cm inches
Waist 59 23 64 25 69 27 74 29 79 31 84 33 91 36
Hips 86 34 91 36 96 38 101 40 106 42 111 44 118 46.5

Inseam Gary's

cm inches
Capri 61 24
Short 67 26
Regular 81 32

Inseam Gary Taper’s

cm inches
Short 63.5 25
Regular 68.5 27

Inseam Gary Luxe's

cm inches
Short 66 26
Regular 71 28

Inseam Explorer Trousers

cm inches
Regular 63.5 25

Inseam Power Kick Flares

cm inches
Short 76 30
Regular 81 32

General Size Guide

General Size Chart

UK Sizes 6 / XXS 8 / XS 10 / S 12 / M 14 / L 16-18 / XL 18-20 / XXL
cm inches cm inches cm inches cm inches cm inches cm inches cm inches
Bust 77 30 82 32 87 34 92 36 97 38 102 40 109 43
Waist 59 23 64 25 69 27 74 29 79 31 84 33 91 36
Hips 86 34 91 36 96 38 101 40 106 42 111 44 118 46.5
Inseam Gary's cm inches
Capri 61 24
Short 67 26
Regular 81 32

Bras Size Guide

Cup Size to Alpha Size Conversion Chart

Bra Size 30 32 34 36 38 40 42 44
A XS XS S M L L XXL XXXL
B XS XS S M L XL XXL XXXL
C XS S S M L XL XXL XXXL
D S S M L L XL XXL No options available
DD/E S S M L XL XXL XXXL No options available
DDD/F S M L XL XL XXL XXXL No options available

International Underband Conversion Chart

UK 30 32 34 36 38 40 42 44
US 30 32 34 36 38 40 42 44
EU 65 70 75 80 85 90 95 100
Australia 8 10 12 14 16 18 20 22
France 80 85 90 95 100 105 110 115
Italy 0 1 2 3 4 5 6 7

International Cup Conversion Chart

UK A B C D DD E F
US A B C D DD/E DDD/F G
EU A B C D DD E F
Australia A B C D DD E F
Germany A B C D E/DD F G
France A B C D E F G
Italy A B C D DD E F

Shoes Size Guide

Asics Size Guide

US 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11
UK 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9
EU 35.5 36 37 37.5 38 39 39.5 40 40.5 41.5 42 42.5 43
AU 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11

New Balance Size Guide

US 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11
UK 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9
EU 35 36 36.5 37 37.5 38 39 40 40.5 41 41.5 42.5 43
AU 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11

On Running Size Guide

US 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11
UK 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9
EU 36 36.5 37 37 37.5 38 38.5 39 40 40.5 41 42 42.5
AU 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11

Veja Size Guide

US 5 6 7 8 9 10
UK 3 4 5 6 7 8
EU 36 37 38 39 40 41
Length (cm) 23.9 24.5 25.2 25.8 26.3 27
EU 8.2 8.4 8.4 8.6 8.9 9

Yoko Size Guide

US 5-5.5 6.6-7.5 8-9 9.5-10
UK 3-3.5 4-5 6-6.5 7-8
EU 35/36 37/38 39/40 41/42
CM 22-23 24-25 25.5-26 26.5-27.5

International Conversions

Size XXS XS S M L XL XXL
UK 6 8 10 12 14 16-18 18-20
US 2 4 6 8 10 12 14
EU 34 36 38 40 42 44 46
AU 6 8 10 12 14 16 18
Need Assistance?

For further information and advice, contact Customer Care, or book a session with our virtual Personal Shopper for help on finding the best activewear pieces for you.

How to measure

Hint: For the most accurate results, measure yourself in your underwear.

  • Chest: Measure around the fullest part of your chest, keeping tape firmly under your armpits and around your shoulder blades.

  • Waist: Measure around your waist, slightly below your natural waist, where you normally wear your pants. Insert your forefinger between the tape and your body to allow ease in fit.

  • Hip: Measure around the fullest part of your hips, inserting your forefinger between the tape and your hip to allow ease in fit.

  • Inseam: Measure a similar pant that fits you well. Measure along the inseam, from the crotch seam to the bottom of the hem.

  • Tip: If you are 5'4" or under, we recommend trying 7/8 as full length.

Between Sizes?

If your measurements are in between those listed in the size chart, pick the next size up.

Doesn't Fit?

If the fit is not perfect, return it within 45 days, as long as it's unworn, unwashed and unaltered. See Returns policy