O’Neill Rash Vest Size Guide

Our O’Neill rash vest size guide helps you select the right fit for surfing, swimming and watersports. A well-fitting rash vest improves comfort, reduces chafing and offers better protection in and out of the water.

Shop All O'Neill Rash Vests

How Should an O’Neill Rash Vest Fit?

An O’Neill rash vest should fit close to the body without feeling restrictive. A snug fit helps prevent the fabric from riding up in the water and reduces chafing when paddling or swimming. It should feel comfortable across the shoulders and chest, with enough stretch to allow full movement.

How to Measure for an O’Neill Rash Vest

  • Chest: Measure around the fullest part of your chest.
  • Waist: Measure around your natural waistline.
  • Height: Helps determine overall fit and length.

O’Neill Rash Vest Size Charts

Use the size charts below to find your ideal fit. Rash vests are designed to be worn close to the skin, but you can choose a slightly looser fit for casual wear or beach use.

O'Neill Mens Rash Vests Size Chart

O'Neill Mens Rash Vests Size Guide

Size
 Height Weight Chest Waist
(cm) (kg) (cm) (cm)
XXS 168 - 173 52 - 59 90 - 93 70 - 72
XS 170 - 175 57 - 64 93 - 95 72 - 75
S 173 - 178 61 - 70 95 - 99 75 - 79
M 175 - 180 70 - 77 99 - 104 79 - 84
L 178 - 183 77 - 86 104 - 110 84 - 89
XL 180 - 185 86 - 95 110 - 117 89 - 94
XXL 183 - 188 95 - 104 117 - 123 94 - 99
XXXL 183 - 191 104 - 113 123 - 130 99 - 112

O'Neill

O'Neill Womens Rash Vests Size Guide

Size
 Height Weight Chest Waist
(cm) (kg) (cm) (cm)
XXS 160 - 165 45 - 52 77 - 83 64 - 69
XS 163 - 168 50 - 57 80 - 85 66 - 71
S 165 - 170 54 - 61 83 - 88 69 - 74
M 168 - 170 59 - 68 86 - 91 74 - 77
L 170 - 175 64 - 73 90 - 95 77 - 81
XL 173 - 178 68 - 77 94 - 99 79 - 85
XXL 175 - 180 75 - 84 98 - 103 85 - 89

O'Neill

O'Neill Kids Rash Vests Size Guide

Size
 Height Weight Chest Waist
(cm) (kg) (cm) (cm)
6 Mths 58 - 68.5 5 - 7.5 43 42 - 44.5
12 Mths 68.5 - 73.5 7.5 - 10 46 44.5 - 47
18 Mths 73.5 - 79 10 - 12 48 47 - 49.5
1 88 - 98 11 - 13.5 48 - 53 45.5 - 51
2 98 - 108 13.5 - 16 51 - 56 48 - 53
3 108 - 118 16 - 18 53 - 58 51 - 56
4 118 - 126 18 - 25 58 - 64 51 - 56
6 126 - 133 22.5 - 29.5 62 - 67 55 - 60
8 133 - 141 27 - 34 66 - 71 58 - 64
10 141 - 147 34 - 41 71 - 76 58 - 64
12 147 - 155 41 - 48 74 - 79 64 - 69
14 155 - 163 48 - 54.5 79 - 84 69 - 74
16 163 - 170 54.5 - 61 84 - 89 71 - 76

What If I’m Between Sizes?

If you are between sizes, choose a smaller size for a tighter performance fit that stays in place during activity. For a more relaxed fit for general beach use or swimming, you may prefer the larger size.

Signs Your Rash Vest Is the Wrong Size

  • Too big: loose fit, fabric riding up, reduced comfort in the water.
  • Too small: restricted movement, tightness across the chest or shoulders.
  • Good fit: close to the body, comfortable stretch and stays in place during activity.

O’Neill Rash Vest Size Guide FAQs

Should a rash vest be tight or loose?

A rash vest should fit snugly to prevent it from riding up and to reduce chafing. However, some people prefer a slightly looser fit for casual wear.

Do O’Neill rash vests fit true to size?

O’Neill rash vests generally fit true to size, but checking your chest measurement against the size chart is recommended.

Can I wear a rash vest loose?

Yes, for general beach use or swimming you can choose a looser fit, but for surfing and watersports a snug fit is usually better.

Are rash vests supposed to stretch?

Yes, rash vests are made from stretch materials to allow full movement and a close, comfortable fit.

Shop O’Neill Rash Vests

Once you’ve found your size, explore our full range of O’Neill rash vests for men, women and kids, including short sleeve, long sleeve and UV protection options.

Shop all O’Neill rash vests
O'Neill Men’s rash vests
O'Neill Women’s rash vests
O'Neill Kids rash vests