From the manufacturer

SERIES STYLES

BASIC

The O'Neill basic skin sun shirts offer maximum U.P.F protection with cleanly designed graphics and minimal seam placement for rash prevention.

Slim fit: fitting close to the body, but is not too tight.

HYBRID

The O'Neill hybrid series protects against UV exposure and board rash with casual in-and-out of the water versatility.

Slim fit: fitting close to the body, but is not too tight.

24/7 TRAVELER

The O'Neill 24/7 Traveler series is a must have for world travelers and outdoor enthusiast alike. The ultra breathable cooling of the 24-7 technology provides lightweight protection from extreme heat & fatigue.

Relaxed fit: similar to a traditional t-shirt.