This BUFF® Thermonet Balaclava offers optimal warmth and comfort in cold conditions without feeling bulky, thanks to the Primaloft® yarns. Designed for intensive sports in cold weather conditions. Thanks to the high breathability and high thermal insulation, you will stay nice and warm and comfortable during your winter trips. - Tight, comfortable and stretchy: perfect for under your helmet - Ideal for winter sports: ski, snowboard, freestyle - ThermoNet® technology, revolutionary technology developed by BUFF® and Primaloft®. - Equipped with laser-cut openings on the mouthpiece for free breathing - Thanks to its smart design, the Balaclava is also easy to wear under the chin by simply pulling the mouthpiece down.