2026 Youth Fluid Portl Jersey Size:L The A-Aria POLARTEC® Switch Long

The A-Aria POLARTEC® Switch Long Sleeve Jersey is a premium mountain bike jersey developed for athletes who need performance and comfort when riding the trails

and features a ‘Sport’ fit with pre-curved arms for maximum riding performance

Rigorously tested in SX and MXGP environments

storage and hydration to enhance all your mountain-bike experiences

With a full mesh main chassis

2026 Youth Fluid Portl Jersey Size:L The A-Aria POLARTEC® Switch LongExpertly designed for young off road riders, the 2026 Youth Fluid Portal Jersey leverages Alpinestars' premier motocross technology to deliver a total performance look and relaxed fit. The lightweight, moisture wicking polyfabric construction features an ergonomic cut and an extended rear for superior mobility and coverage on tough terrain. Optimized for riders aged 5 to 15, this jersey ensures breathable comfort and durability for all day riding.