Collection: Mountain Bike Base Layers

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Premium Cycling Base Layers for Year-Round Performance

Alpinestars cycling base layers deliver essential thermal regulation and moisture management for mountain bikers who demand professional-grade comfort across all seasons. Engineered with advanced technical fabrics, these base layers provide the foundation for optimal performance whether you're tackling high-altitude trails or intense endurance rides. Each garment features seamless construction and strategic ventilation zones that work in harmony with your cycling jerseys and outer layers to maintain ideal body temperature during variable conditions.

Technical Fabrics for Maximum Comfort

Our mountain bike base layers utilize moisture-wicking materials that rapidly transfer perspiration away from your skin, preventing the chill factor that occurs when sweat accumulates during rest periods. The ergonomic cut follows your body's natural movements without restriction, while flatlock seams eliminate pressure points under backpack straps or protective gear. From lightweight summer options to insulating winter layers, each piece is designed to integrate seamlessly with your complete riding kit.

Choose the Right Layer for Your Ride

Select from short-sleeve and long-sleeve options designed for different temperature ranges and riding intensities. Winter base layers provide thermal insulation without bulk, while summer-weight fabrics offer maximum breathability for hot-weather rides. Pair your base layer with our cycling jackets for comprehensive protection against the elements, ensuring you stay comfortable from trailhead to summit.

Built for Mountain Bike Demands

Alpinestars base layers withstand the rigors of aggressive trail riding with durable construction and quick-drying performance. The antimicrobial treatments resist odor buildup during multi-day adventures, while the athletic fit remains in place through technical descents and challenging climbs. Complete your layering system with proven cycling gear that enhances every aspect of your ride, delivering the comfort and performance you need to push your limits on any terrain.