Size Charts

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″

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 Settings

Setting up your slalom ski with the proper setting is essential to the ski performing the way it should. Here are the factory setting for some of the latest O’Brien slalom skis. The binding measurement is taken from the tail of the ski to the heel of the front binding. Fin settings are also critical. Here is a link to show you the basic adjustments you can make with your fin.

SKI BOOT/HEEL FIN – LONG/DEEP/END
G5
66″ 28.75″ 6.860/2.500/0.735
67″ 29.25″ 6.860/2.510/0.725
68″ 29.75″ 6.860/2.510/0.740
CONQUER/PREVAIL
64.5″ 29.0″ 6.850/2.495/0.720
66″ 29.25″ 6.850/2.500/0.730
67.5″ 29.875″ 6.850/2.510/0.750
ELITE ALPHA
65.5″ 28.75″ 2.505/6.840/0.720
67″ 29.25″ 2.510/6.850/0.720
68.5″ 29.75″ 2.510/6.840/0.750
ELITE QUATTRO
64.5″ 29.0″ 2.500/6.850/0.760
66″ 29.25″ 2.505/6.850/0.765
67.5″ 29.875″ 2.510/6.860/0.780
ELITE JR.
59″ 27.0″ 2.485/6.850/0.760
62″ 27.5″ 2.490/6.850/0.760
ENDO
65.5″ 28.75″ 2.505/6.845/0.720
67″ 29.25″ 2.510/6.850/0.720
68.5″ 29.75″ 2.510/6.850/0.750
SYNCHRO
63″ 29.0″ ARC FIN
66″ 30.0″ ARC FIN
69″ 31.0″ ARC FIN
SIEGE & ALLEGIANCE
64.5″ 28.75″ 6.830/2.500/0.800
66″ 29.25″ 6.830/2.500/0.780
67.5″ 29.875″ 6.840/2.510/0.800
69″ 30.5″ 6.840/2.510/0.790
SIEGE JR.
59″ 27.0″ 2.490/6.850/0.960
62″ 28.25″ 2.490/6.850/0.960
SIXAM SS
66″ 29.25″ 6.840/2.520/0.800
67.5″ 29.875″ 6.840/2.520/0.800
69″ 30.5″ 6.840/2.510/0.790
SEVEN
64″ 28.625″ ARC FIN
66″ 29.875″ ARC FIN
68″ 30.875″ ARC FIN
MISSION
66″ 30.25″ ARC FIN
68″ 30.5″ ARC FIN
PRO TOUR
68″ 30″ ARC FIN
58″ 26.5″ ARC FIN

Vest Size Charts

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

Glove Sizing

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.

Support Hotline

Email Us
1.800.6.obrien

7926 Bracken PL SE
Snoqualmie, WA 98065

Dealer Locator | Dealer Support

Sign Up For More

Fields marked with an * are required