O'Neill Men's Wetsuit Size Guide

Size	Height (cm)	Weight (kg)	Chest (cm)	Waist (cm)
2XS	168-173	52-59	90-93	70-72
Extra Small	170-175	57-64	93-95	72-75
Small Short	166-171	59-68	95-99	75-79
Small	173-178	61-70	95-99	75-79
Small Tall	183-188	66-75	95-99	75-79
Medium Short	169-174	66-75	98-103	77-83
Medium	175-180	70-77	98-103	77-83
Medium Tall	185-191	73-82	98-103	77-83
Large Short	171-177	73-82	104-110	84-89
Large	178-183	77-86	104-110	84-89
Large Tall	188-193	82-91	104-110	84-89
Extra Large Short	174-179	82-91	110-117	89-94
Extra Large	180-185	86-95	110-117	89-94
Extra Large Tall	191-196	91-100	110-117	89-94
2XL	183-188	95-104	117-123	94-99
3XL	183-188	104-113	123-130	99-112
4XL	185-193	113-122	130-136	112-122

Size	Height (in)	Weight (lb)	Chest (in)	Waist (in)
2XS	5'6"-5'8"	115-130	35½-36½	27½-28½
Extra Small	5'7"-5'9"	125-140	36½-37½	28½-29½
Small Short	5'5½"-5'7½"	130-150	37½-39	29½-31
Small	5'8"-5'10"	135-155	37½-39	29½-31
Small Tall	6'-6'2"	145-165	37½-39	29½-31
Medium Short	5'6½"-5'8½"	145-165	39-41	31-33
Medium	5'9"-5'11"	155-170	39-41	31-33
Medium Tall	6'1"-6'3"	160-180	39-41	31-33
Large Short	5'7½"-5'9½"	160-180	41-43½	33-35
Large	5'10"-6'	170-190	41-43½	33-35
Large Tall	6'2"-6'4"	180-200	41-43½	33-35
Extra Large Short	5'8½"-5'10½"	180-200	43½-46	35-37
Extra Large	5'11"-6'1"	190-210	43½-46	35-37
Extra Large Tall	6'3"-6'5"	200-220	43½-46	35-37
2XL	6'-6'2"	200-230	46-48½	37-39
3XL	6'-6'3"	230-250	48½-51	39-44
4XL	6'1"-6'4"	250-270	51-53½	44-48

Endless possibilities.