Womens & Mens Sizing Guides

Size guides

Here our Muscle Nation, we’re committed to making your online shopping experience as seamless as possible. We know how challenging it can be to find the right size when shopping online, without trying the items on first.

That’s why we go the extra mile to provide detailed product descriptions for every piece in our collection. These descriptions include specifics about fabric, fit, and sizing to help you make an informed choice. Additionally, we share model information for extra guidance when selecting your size.

We also recognise that everyone’s body is beautifully unique, and no sizing chart can perfectly capture every shape. Think of our size guide as just that—a guide. If you’re unsure or have any questions, our friendly customer service team is always here to help. Feel free to reach out to us anytime at orders@musclenation.org . We’re here to ensure you have the best possible experience!

BOTTOMS

Womens bottoms measurement guide
  1. WAIST
    Measure the full circumference at the narrowest point of the waist
  2. HIPS
    Measure the full circumference at the widest/fullest point of the hips
  3. INSEAM
    Measure the full length of the inner leg from crotch to ankle edge on garment.
Size Waist Hips
XXS / AU 4-6 58-63 90-94
XS / AU 6-8 64-68 95-99
S / AU 8-10 69-73 100-104
M / AU 10-12 74-78 105-109
L / AU 12-14 79-83 110-114
XL / AU 14-16 84-88 115-119
XXL / AU 16-18 89-93 120-124
XXXL / AU 18-20 94-98 125-129
XXXXL / AU 20-22 99-103 130-134
Size Full Length Ankle Length 7/8 Length
XXS / AU 4-6 64-66 59-61 51-53
XS / AU 6-8 65-67 60-62 52-54
S / AU 8-10 66-68 61-63 53-55
M / AU 10-12 67-69 62-64 54-56
L / AU 12-14 68-70 63-65 55-57
XL / AU 14-16 69-71 64-66 56-58
XXL / AU 16-18 70-72 65-67 57-59
XXXL / AU 18-20 71-73 66-68 58-60
XXXXL / AU 20-22 72-74 67-69 59-61
Length Inseam
Referee Shorts 23-25
Bike Shorts 13-15
Midway Shorts 9-11
Booty Shorts 5-6
Size Waist Hips
XXS / AU 4-6 24 36
XS / AU 6-8 26 38
S / AU 8-10 28 40
M / AU 10-12 30 42
L / AU 12-14 32 44
XL / AU 14-16 34 46
XXL / AU 16-18 36 48
XXXL / AU 18-20 38 50
XXXXL / AU 20-22 40 52
Size Full Length Ankle Length 7/8 Length
XXS / AU 4-6 25 23 20
XS / AU 6-8 26 24 20
S / AU 8-10 26 24 21
M / AU 10-12 26 24 21
L / AU 12-14 27 25 22
XL / AU 14-16 27 25 22
XXL / AU 16-18 28 26 22
XXXL / AU 18-20 28 26 23
XXXXL / AU 20-22 29 27 23
Length Inseam
Referee Shorts 9
Bike Shorts 6
Midway Shorts 4
Booty Shorts 2

SPORTS BRAS

Womens bras measurement guide
  1. Bust
    Measure the full circumference at the fullest point of the bust.
  2. Under Bust
    Measure the full circumference under your bust.
Size Bust Under Bust
XXS / AU 4-6 75-79 65-69
XS / AU 6-8 80-84 70-74
S / AU 8-10 85-89 75-79
M / AU 10-12 90-94 80-84
L / AU 12-14 95-99 85-89
XL / AU 14-16 100-104 90-94
XXL / AU 16-18 105-109 95-99
XXXL / AU 18-20 110-114 100-104
XXXXL / AU 20-22 115-119 105-109
Size Bust Under Bust
XXS / AU 4-6 29.5-31.5 25.5-37.5
XS / AU 6-8 31.5-33.5 27.5-29.5
S / AU 8-10 33.5-35.5 29.5-31.5
M / AU 10-12 35.5-37.5 31.5-33.5
L / AU 12-14 37.5-39.5 33.5-35.5
XL / AU 14-16 39.5-41.5 35.5-37.5
XXL / AU 16-18 41.5-43.5 37.5-39.5
XXXL / AU 18-20 43.5-45.5 39.5-41.5
XXXXL / AU 20-22 45.5-47.5 41.5-43.5

TEES

We recommend sizing your tees based on your bra size.

Our tee range features a variety of fabric weights, each with its own unique feel. We allow for slight sizing variations within tolerances to ensure that every tee offers the perfect balance of comfort and style, tailored just for you.

RELAXED FIT

Relaxed Fit Measurements

MEASURED IN CM

Size Chest Hem Length
XXS 50 50 55.2
XS 52.5 52.5 56.5
S 55 55 57.8
M 57.5 57.5 59.1
L 60 60 60.4
XL 62.5 62.5 61.7
2XL 65 65 63
3XL 67.5 67.5 64.3
4XL 70 70 65.6

OVERSIZED FIT

Oversized Fit Measurements

MEASURED IN CM

Size Chest Hem Length
XXS 57 59 64
XS 59.6 61.5 65
S 62 64 66
M 64.5 66.5 67
L 67 69 68
XL 69.5 71.5 69
2XL 72 74 70
3XL 74.5 76.5 71
4XL 77 79 72

BOXY FIT

Boxy Fit Measurements

MEASURED IN CM

Size Chest Hem Length
XXS 50 50 55.2
XS 52.5 52.5 56.5
S 55 55 57.8
M 57.5 57.5 59.1
L 60 60 60.4
XL 62.5 62.5 61.7
2XL 65 65 63
3XL 67.5 67.5 64.3
4XL 70 70 65.6

BOTTOMS

Mens bottoms measurement guide
  1. Waist
    Measure the full circumference at the narrowest point of the waist.
  2. Hips
    Measure the full circumference at the widest point of the hips.
Size Waist Hips
S 77-81 90-04
M 82-86 95-99
L 87-91 100-104
XL 92-96 105-109
XXL 97-101 110-114
XXXL 102-106 115-119
XXXXL 107-111 120-124
Size Waist Hips
S 31 36.5
M 33 38.5
L 35 40.5
XL 37 42.5
XXL 39 44.5
XXXL 41 46.5
XXXXL 43 48.5

TOPS

Mens tops measurement guide
  1. Chest
    Measure the full circumference of the chest 2.5cm below the underarm.
  2. Waist
    Measure the full circumference at the narrowest point of the waist.
  3. Hips
    Measure the full circumference at the widest point of the hips.
Size Chest Waist Hips
S 95-99 77-81 90-04
M 100-104 82-86 95-99
L 105-109 87-91 100-104
XL 110-114 92-96 105-109
XXL 115-119 97-101 110-114
XXXL 120-124 102-106 115-119
XXXXL 125-129 107-111 120-124
Size Chest Waist Hips
S 38.5 31 36.5
M 40.5 33 38.5
L 42.5 35 40.5
XL 44.5 37 42.5
XXL 46.5 39 44.5
XXXL 48.5 41 46.5
XXXXL 50.5 43 48.5

SLIDES

Slides sizing guide
  1. Length
    Measure the length of your foot, from heel to toe.
US EU CM
6 37 24.5
7.5 39 25.5
9 41 27
10.5 43 28
12 45 29.5
13.5 47 31