v2.0.0 Size Guide

Fit & measurements

Find your true size

Every body measures a little differently, so we size by chest, waist and hip girth rather than guesswork. Use the reference table below alongside the measuring guide to check yourself before you order.

Size chart

All measurements are body girth, in centimetres, with 1cm of ease already built in.

Size XS S M L XL XXL
EUR 34 36 38/40 42 44 46
Chest 80–84 85–89 90–95 96–101 102–108 109–115
Waist 60–64 65–69 70–75 76–81 82–88 89–95
Low hip 89–93 94–98 99–104 105–110 111–117 118–124

Between two sizes? Go by your chest measurement first for tops, or hips for bottoms, see the notes below.

Note: all size ranges include 1cm of ease for comfort. IWAS · Size Guide 2026
SIZE CHART HOW TO MEASURE
XS S M L XL XXL 3XL 4XL
Tops, Shirts & Dresses Spalla 37.5 38 39 40.5 42.3 - - -
Torace 94 97 101 107 114 - - -
Vita 71 74 78 84 91 - - -
Fianchi 97.5 101 105 111 118 - - -
Gonne Vita 67 71 75 81 88 - - -
Fianchi 94 97 101 107 114 - - -
Pantaloni Vita 68 71 75 81 88 - - -
Fianchi 93 97 101 107 114 - - -
Capispalla Spalla 39 40 41 42.5 44.25 46 47.5 49
Torace 95.5 99 103 108 116 124 130 136
Vita 83.5 86.5 91 97 104 112 118 124
Manica 61 62 63 64.5 65.5 66.5 67.5 68.5
Calzature CM lunghezza totale - 24.5 26 27 - - - -
UK - 6 7.5 9 - - - -
EU - 39 41 43 - - - -
US - Uomo - 6.5 8 9.5 - - - -
US - Donna - 8.5 10 11.5 - - - -
XS S M L XL XXL 3XL 4XL
Top, camicie e abiti Spalla 15.0 15.2 15.6 16.2 16.9 - - -
Torace 37.6 38.8 40.4 42.8 45.6 - - -
Vita 28.4 29.6 31.2 33.6 36.4 - - -
Fianchi 39.0 40.4 42.0 44.4 47.2 - - -
Gonne Vita 26.8 28.4 30.0 32.4 35.2 - - -
Fianchi 37.6 38.8 40.4 42.8 45.6 - - -
Pantaloni Vita 27.2 28.4 30.0 32.4 35.2 - - -
Fianchi 37.2 39.8 40.4 42.8 45.6 - - -
Capispalla Spalla 15.6 16.0 16.4 17.0 17.7 18.1 18.7 19.3
Torace 38.2 39.6 41.2 43.6 46.4 48.8 51.2 53.5
Vita 33.4 34.6 36.4 38.8 41.6 44.1 46.5 48.8
Manica 24.4 24.8 25.2 25.8 26.15 26.2 26.6 27.0
Calzature Pollici lunghezza totale - 9.65 10.24 10.63 - - - -
UK - 6 7.5 9 - - - -
EU - 39 41 43 - - - -
US - Uomo - 6.5 8 9.5 - - - -
US - Donna - 8.5 10 11.5 - - - -
(In cm) (In inches)

1 Sleeve
Start the measuring from the top of your shoulder, over your elbow to your wrist bone. Keep your arm straight and by your side.

2 Chest/Bust
Put the measuring tape behind you, measure your entire circumference at the fullest part of your chest, over the tips, keeping the tape parallel to the floor.

3 Waist
Measure at the smallest part of your waist. This is usually your naval, below the rib cage and above the hip bone.

4 Hip
Put the measuring tape behind you so you measure your entire circumference, at the fullest part of your seat, keeping the tape parallel to the floor.