Size Guide

Every Oceans4Us item is printed or embroidered just for you, so we can't exchange sizes. Please take two minutes to check your size before you order.

Quick tips
  • Between sizes? Size up.
  • Tees, hoodies, jackets and vests are measured on the garment laid flat. "Width" is straight across the chest, one inch below the armpits. Compare it to a shirt you already love.
  • Rash guards are measured on your body: chest, waist and hips.
  • All measurements are in inches. Each product page also shows its own chart.

T-shirts & long sleeves

Unisex classic fit: Buddy System, Dive Team and Coastal Wave long sleeve.

Size Length Width Fits chest
XS 27 16 ½ 31–34
S 28 18 34–37
M 29 20 38–41
L 30 22 42–45
XL 31 24 46–49
2XL 32 26 50–53
3XL 33 28 54–57
4XL 34 30 58–61
5XL 35 31–32 62–65

Rash guards: men's

Body measurements. Snug, second-skin fit.

Size Chest Waist Hips
2XS 34 ⅝ 28 ⅜ 35 ⅜
XS 36 ¼ 29 ⅞ 37
S 37 ¾ 31 ½ 38 ⅝
M 39 ⅜ 33 ⅛ 40 ⅛
L 42 ½ 36 ¼ 43 ¼
XL 45 ⅝ 39 ⅜ 46 ½
2XL 48 ⅞ 42 ½ 49 ⅝
3XL 52 45 ⅝ 52 ¾
4XL 55 ⅛ 48 ⅞ 55 ⅞
5XL 58 ¼ 52 59
6XL 61 ⅜ 55 ⅛ 62 ¼

Rash guards: women's

Body measurements. Snug, second-skin fit.

Size Chest Waist Hips
XS 34 ⅝ 26 ¾ 37
S 36 ¼ 28 ⅜ 38 ⅝
M 37 ¾ 29 ⅞ 40 ⅛
L 41 33 ⅛ 43 ¼
XL 44 ⅛ 36 ¼ 46 ½
2XL 47 ¼ 39 ⅜ 49 ⅝
3XL 50 ⅜ 42 ½ 52 ¾

Classic pullover hoodies

For a relaxed fit, order one size up.

Size Chest width Length
S 20 27
M 21 28
L 23 29
XL 25 30
2XL 26 ½ 31
3XL 28 32

Heavyweight half-zip pullover

Size Length Chest width
XS 26 ¼ 23
S 28 23 ¾
M 28 ½ 25 ¾
L 29 ½ 27 ¾
XL 30 29 ¾
2XL 30 ½ 31 ¾
3XL 31 33 ¾

Columbia® full-zip fleece

Men's and women's. Width is measured all the way around.

Size Width (around) Sleeve Length
S 43 35 28
M 46 36 28
L 50 37 29
XL 54 38 29
2XL 58 39 30

Columbia® fleece vests

Men's (chest measured all the way around)

Size Length Chest
S 27 ½ 43
M 27 ½ 46
L 28 ½ 50
XL 28 ½ 54
2XL 29 ½ 58
3XL 30 60

Women's

Size Length Chest
M 24 41
L 25 44
XL 25 47
2XL 26 48

Champion® packable windbreakers

Size Body length Body width Sleeve (from center back)
S 27 ¼ 21 ¼ 34 ¼
M 28 22 ¾ 35
L 28 ¾ 24 ¼ 36
XL 29 ½ 25 ¾ 36 ¾
2XL 30 ¼ 27 ¼ 37 ½

Women's cropped windbreakers

Size Length Width Sleeve
XS 19 ¼ 22 28 ¾
S 20 23 29 ½
M 20 ¾ 24 30 ¼
L 21 ½ 25 31
XL 22 ¼ 26 31 ¾
2XL 23 27 32 ½

Hats

Our baseball caps and dad hats are one size with an adjustable strap and fit head sizes from about 20 ½ to 23 ⅝ inches around. The cuff beanie is one size, with a stretchy rib knit.

Not listed here?

Polos, the James River and Coral Reef tees, the full-zip windbreakers and the UPF 50+ long sleeves each have their own chart on the product page. Still unsure? Email ken@oceans4us.com or use the chat button, and we'll help you pick.