FREE SHIPPING on US orders over $100 not including Alaska and Hawaii
Open mobile app


Customer supportTypically replies within a day
Need help or have questions about placing an order, delivery, or something else? Message us anytime for support.
The Seirus Heatwave Skull Liner brings thermodynamic warmth to a low‑profile, form‑fitting design that layers effortlessly under any helmet. Built with Seirus’ exclusive Heatwave lining, it reflects and amplifies your natural heat for a noticeable boost in warmth without adding bulk. The 4‑way stretch construction creates a smooth, comfortable fit, while flat seams and reinforced stitching enhance durability and all‑day comfort. Lightweight, breathable, and cut‑and‑sewn for precision shaping, it’s an essential upgrade for cold‑weather riding, skiing, or winter work.
Because you want a lightweight, helmet‑friendly layer that adds serious warmth without bulk. The Heatwave Skull Liner boosts heat retention, fits smoothly, and holds up to repeated use.




Need help or have questions about placing an order, delivery, or something else? Message us anytime for support.
