Recommended Thickness

Water temperature	Thickness recommended
75-85F	1/16" (1.6mm) neoprene, lycra, polartec
70-85F	1/8" (3mm) neoprene
65-75F	3/16" (5mm) neoprene
50-75F	1/4" (6.5mm) neoprene
35-65F	3/8" (9.5mm) neoprene, drysuit

Protection From The Elements

Water temperature	Style of suit
80+F	None needed
72-80F	Shortie or three-quarter
65-72F	Full
60-65F	Full wetsuit or drysuit
50-60F	Full drysuit
Under 50	Full drysuit-gloves, hood and booties

Women's Size Guide

Size	Weight	Height
XS	95 - 110 lbs.	5' - 5'2"
S	105 - 115 lbs.	5'2" - 5'5"
M	120 - 135 lbs.	5'5" - 5'8"
L	145 - 160 lbs.	5'7" - 5'10"
XL	Over 155 lbs.	5'9" +

Juniors' Size Guide

Size	Weight	Height
XS	40 - 50 lbs.	3'8" - 4'2"
S	50 - 60 lbs.	4'2" - 4'6"
M	60 - 75 lbs.	4'6" - 4'10"
L	70 - 90 lbs.	4'10" - 5'
XL	90 - 100 lbs.	5' - 5'4"

Kids' Size Guide
 
     

Size	Weight	Age
C0	15 - 25 lbs.	6 - 9 mos.
C1	20 - 30 lbs.	9 - 12 mos.
C2	25 - 35 lbs.	1 - 2 yrs.
C3	30 - 40 lbs.	3 - 4 yrs.
C4	40 - 50 lbs.	5 - 6 yrs.

 
 
Men's Size Guide

Size	Weight	Height
S	110 - 130 lbs.	5'3" - 5'6"
M	140 - 160 lbs.	5'6" - 5'8"
L	170 - 190 lbs.	5'9" - 6'1"
XL	190 - 210 lbs.	5'11" - 6'3"
XXL	210 - 230 lbs.	6' - 6'4"
XXXL	220 - 250 lbs.	6' +