ION wetsuit size chart

Men's

Size	Height	Weight (lb)	Chest (in)
XS	5′7″–5′9″	119–137	35–37
S	5′8″–5′10″	137–154	37–39
ST	5′10″–6′0″	143–163	36–39
MS	5′6″–5′9″	146–165	39–41
M	5′9″–5′11″	154–172	39–41
MT	6′0″–6′2″	161–181	38–41
LS	5′7″–5′10″	163–183	41–43
L	5′10″–6′0″	172–190	41–43
LT	6′1″–6′4″	179–198	40–43
XLS	5′8″–5′11″	181–201	43–45
XL	5′11″–6′2″	190–207	43–44
XLT	6′2″–6′5″	196–216	42–44
XXLS	5′9″–6′0″	198–216	44–47
XXL	6′0″–6′3″	207–225	44–46
3XL	6′1″–6′4″	225–245	46–49
4XL	6′2″–6′5″	245–265	49–53

Find your ION size in other brands (Men's) →

Women's

Size	Height	Weight (lb)	Chest (in)
XXS	5′1″–5′3″	90–108	30–32
XS	5′2″–5′5″	101–119	31–33
S	5′3″–5′7″	117–134	33–35
MS	5′2″–5′6″	132–154	35–37
M	5′5″–5′9″	132–152	35–37
MT	5′9″–6′1″	141–161	35–37
L	5′7″–5′11″	141–165	36–38
LT	5′9″–6′3″	159–176	36–38
XL	5′9″–6′3″	165–198	38–40
XXL	5′9″–6′3″	170–220	39–41

Find your ION size in other brands (Women's) →

From ion-products.com, men's and women's (metric)

Size ranges come from each brand's published full-wetsuit chart, read in October 2026. Brands update their charts, so check the brand's own chart before you buy. Charts marked "via" are a retailer's copy, used because the brand's own page couldn't be read.