Mens Wetsuit Sizing (O'Neill, Billabong, Quiksilver)

Size XS S M L XL XXL
Height 5'7 - 5'9 5'8 - 5'10 5'9 - 5'11 5'10 - 6'0 5'11 - 6'1 6'0 - 6'2
Weight 125 - 140 135 - 155 150 - 170 170 - 190 190 - 210 210 - 230
Chest 34.5 - 36.5 36.5 - 38.5 38.5 - 40.5 40.5 - 42.5 42.5 - 44.5 45.5 - 46.5
Waist 28 - 30 29 - 31 30.5 - 32.5 32.5 - 34.5 34.5 - 36.5 36.5 - 38.5

O'Neill DrySuit Sizing (O'Neill Boost Drysuit and Hybrid Drysuit)

Size XS S M L XL XXL
Height 5'7" - 5'9" 5'8" - 5'10" 5'9" - 5'11" 5'10" - 6'0" 5'11" - 6'1" 6'0" - 6'2"
Weight 125 - 140 135 - 155 150 - 170 170 - 190 190 - 210 210 - 230