The O'Neill Thermo-X is a base layer insulator, which can be worn under your winter wetsuit for added warmth. Alternatively it can be worn with board shorts in cool to warm water temperatures, perfect for UK summers. The Super Low Crew Neck stops any interference with wetsuit neck. The rash vest is Nylon/Spandex with HyperDry for maximum insulation and minimal water absorption.

FEATURES:

• Maximum core insulation
• Water Repellency, Odor Resistance
• 4-Way stretch fabric.
• 50 U.P.F
• Rash Protection
• Super Low Crew Neck