Castelli Estremo Thermal Winter Helmet Cap

Estremo Thermal Winter Helmet Cap by Castelli

The Estremo Thermal Winter Helmet Cap by Castelli is built for Road rides in winter conditions. Its thermal construction adds welcome warmth on cold days without getting bulky under your helmet. The close fit makes it a practical layer when temperatures drop and steady comfort matters on long miles. Designed for winter use, it helps you stay focused on the ride instead of the weather. The cap works well for road cycling setups where low-profile protection is key. If you want extra insulation for chilly training sessions and crisp endurance rides, this piece is a smart add-on for the cold season.

black | one size:

Gender:

Men´s, Women's

• Thermal winter helmet cap for road cycling, built to keep your head warm on cold-weather rides
• Winter-specific design for added insulation and reliable comfort under the helmet
• Slim fit made to layer easily beneath a road bike helmet without bulk
• Focused cold-weather protection for commuting, training rides, and long road sessions
• Estremo Thermal construction supports heat retention when temperatures drop on the bike

Insert:

100% polyester

Back panel, inserts:

52% polyamide, 32% polyester, 16% elastane

• black | one size: 4526531-010-UNI