O’Neill Men’s Wetsuit Sizing Chart

Sizes	Height	Weight	Chest
XXS	5'6" - 5'8"	115 - 130	32 1/2 - 34 1/2
XS	5'7" - 5'9"	125 - 140	34 1/2 - 36 1/2
S	5'8" - 5'10"	135 - 155	36 1/2 - 38 1/2
ST	6' - 6'2"	145 - 165	36 1/2 - 38 1/2
M	5'9" - 5'11"	150 - 170	38 1/2 - 40 1/2
MS	5'6 1/2" - 5'8 1/2"	140 - 160	38 1/2 - 40 1/2
MT	6'1" - 6'3"	160 - 180	38 1/2 - 40 1/2
L	5'10" - 6'	170 - 190	40 1/2 - 42 1/2
LS	5'7 1/2" - 5'9 1/2"	160 - 180	40 1/2 - 42 1/2
LT	6'2" - 6'4"	180 - 200	40 1/2 - 42 1/2
XL	5'11" - 6'1"	190 - 210	42 1/2 - 44 1/2
XLS	5'8 1/2" - 5'10 1/2"	180 - 200	42 1/2 - 44 1/2
XLT	6'3 1/2" - 6'5 1/2"	200 - 220	42 1/2 - 44 1/2
XXL	6' - 6'2"	210 - 230	44 1/2 - 46 1/2
XXXL	6' - 6'3"	230 - 250	47 - 49

O’Neill Women’s Wetsuit Sizing Chart

SIZES	HEIGHT ft	WEIGHT lb	CHEST inch	WAIST inch
UK 8	5'5" - 5'7"	105 - 125	31 1/2 - 33 1/2	24 - 26
UK 10	5'6" - 5'8"	110 - 130	32 1/2 - 34 1/2	25 - 27
UK 10S	5'4 1/2" - 5'6 1/2"	105 - 125	32 1/2 - 34 1/2	25 - 27
UK 10T	5'7 1/2" - 5'9 1/2"	120 - 140	32 1/2 - 34 1/2	25 - 27
UK 12	5'7" - 5'9"	120 - 140	34 - 36	26 1/2 - 28 1/2
UK 12S	5'5 1/2" - 5'7 1/2"	115 - 135	34 - 36	26 1/2 - 28 1/2
UK 12T	5'8 1/2" - 5'10 1/2"	130 - 150	34 - 36	26 1/2 - 28 1/2
UK 14	5'8" - 5'10"	130 - 150	35 1/2 - 37 1/2	28 - 30
UK 16	5'9" - 5'11"	140 - 160	37 - 39	29 1/2 - 31 1/2

Below is a link to a website which can help you convert weight and Length
http://www.convert-me.com/en/