The Castelli Pro Thermal subcase is made to warm up with great humidity management, minimizing the footprint under your helmet. This simple bolt has a live cut, so it does not interfere with the laces or the helmet structure, while the thermoflex fabric is surprisingly warm and lets you slip away every moisture drop.

• Thermoflex is warm, soft and elastic.
• Flat stitching.
• Shaped to cover your ears.
• The living edge is flat and does not clutter under the helmet.
• Rear reflective details.
• Color: Red.