O’Brien strives to bring you the best and most current guides, sizing help and gear tips to help you choose the right products and have the absolute best experience using it.
Shaped Ski Size Chart
Lbs. – Weight
26-30 MPH
–
–
Under 180 lbs.
65"-66"
–
–
180-210 lbs.
67"-68"
–
–
Over 210 lbs.
68"-69"
–
–
Slalom Ski Size Chart
Lbs. – Weight
26-30 MPH
30-34 MPH
34-36 MPH
Under 100
59"
59"
59"
100-110
61"-64"
61"-64"
61"-64"
105-120
61"-66"
61"-64"
61"-64"
115-140
61"-66"
61"-66"
61"-66"
136-160
64"-68"
63"-66"
64"-66"
155-180
66"-69"
66"-69"
66"-68"
175-200
68"-69"
68"-69"
68"-69"
200+
68"-69"
68"-69"
68"-69"
Neo Vest Size Chart
Adult Vest
Chest Size
Adult XS
28" – 32"
Adult SM
32"– 36"
Adult MD
36" – 40"
Adult LG
40" – 44"
Adult XL
44" – 48"
Adult 2XL
48" – 52"
Adult 3XL
52" – 56"
Teen
28" – 32"
Kids Vest
Weight
Youth
50 – 90 lbs.
Child
30 – 50 lbs.
Infant
Up to 30 lbs.
Nylon Vest Size Chart
Adult Vest
Chest Size
Adult XS
28" – 32"
Adult SM
32" – 36"
Adult MD
36" – 40"
Adult LG
40" – 44"
Adult XL
44" – 48"
Adult 2XL
48" – 52"
Adult 3XL
52" – 56"
Adult 4XL
56" – 62"
Adult 5XL
62" – 68"
Adult SM/MD
32" – 40"
Adult LG/XL
40" – 52"
Adult Super XL
50" – 60"
Adult EX-Super XL
60" – 70"
Teen
28" – 32"
Kids Vest
Weight
Youth
50 – 90 lbs.
Child
30 – 50 lbs.
Infant
Up to 30 lbs.
Glove Size Chart
Paddleboard Size Chart
Maximum Suggested Weight Limit
Board
Length
Volume
Beginner
Intermediate
Advanced
Lacuna
10’6"
179.2
200 lbs.
235 lbs.
300 lbs.
Lacuna
11"
190.8
210 lbs.
250 lbs.
325 lbs.
Lacuna
11’6"
202.6
225 lbs.
270 lbs.
350 lbs.
Tokio
10"
200
210 lbs.
250 lbs.
325 lbs.
Passage
12"
235
250 lbs.
310 lbs.
400 lbs.
Eclipse
10’6"
179.2
200 lbs.
235 lbs.
300 lbs.
Eclipse
11"
190.8
210 lbs.
250 lbs.
325 lbs.
Mist
10’6"
179.2
200 lbs.
235 lbs.
300 lbs.
Vapor
10’6"
300
250 lbs.
350 lbs.
450 lbs.
Vapor
11’6"
330
275 lbs.
375 lbs.
475 lbs.
Zephyr
10’6"
246
230 lbs.
330 lbs.
430 lbs.
Mercer
10’8"
N/A
210 lbs.
235 lbs.
300 lbs.
Mercer
8"
N/A
100 lbs.
150 lbs.
200 lbs.
The appropriate board size depends on weight, skill level, and volume of the board. The more you weigh, and the lower your skill level, the bigger the board you'll need.
One liter of volume floats one kg weight.
In order to factor in your skill level, multiply your Skill Lever Factor x Your Weight in kilograms to get your recommended volume in liters.
1 Lb. is approximately equal to .45 kg.
When in doubt, lean to the next board size up.
SKILL FACTOR: Beginners = 2 Intermediate = 1.7 Advanced = 1.3 Calculating Board Volume: (Your Weight in lbs. X .45) x Skill Factor = Target Volume Example:You are a beginner and you weigh 195 lbs. (195 lbs. X .45) x2 (Skill Factor) = 175.5 Your board should have a minimum volume of 175.5 liters.
