maxdura dual jersey Size:4XL this lightweight jacket is optimized 8054866078408 this lightweight jacket is optimized for versatility and can be comfortably worn as a standalone jacket in warm conditions or layered under another jacket or shell in cooler weather The premium stretch polyfabric construction features strategically positioned seams and soft spun thread to minimize friction and chafing during intense movement Engineered for dual sport performance 2 way stretch woven sleeve construction with integrated spacer mesh padding and is fully compatible with the Tech Air® Off Road Airbag System for advanced protection