Keep Your Head in the Game. Whatever the Temperature.

Warm. Durable. 100% Yamamoto.

The Lunasurf 3mm Yamamoto Cap is built for surfers and cold-water swimmers who know that losing heat through your head ends sessions early. Crafted from 100% Yamamoto limestone neoprene — the same premium material used in our flagship wetsuits — it delivers exceptional warmth, a comfortable fit, and the durability to handle session after session in the harshest conditions.

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100% Yamamoto Limestone Neoprene

Warmer, softer, and more durable than standard neoprene. Superior thermal retention, reduced water absorption, and faster drying between sessions. The same neoprene trusted in our premium wetsuit range.

Glued & Blind Stitched (GBS) Seams

Every seam has been glued and blind-stitched to reduce water entry and deliver excellent durability — keeping you warmer for longer and ensuring the cap holds its shape session after session.

3mm Thickness

Serious warmth without unnecessary bulk. The ideal thickness for cold-water surfing and open water swimming — enough insulation to make a real difference, without restricting movement or comfort.

Built for Cold Water

Whether you're surfing in winter swells or pushing through a cold-water swim, the Lunasurf 3mm Yamamoto Cap keeps your head warm so you can stay focused on what matters.

Cold water is no excuse to stay on the beach.