Alpinestars Evolution Jacket 100% Other Fibers Imported Lightweight, stretchable mesh main construction Hydration pack ready Removable CE Certified level 1 back protector Bins compatible Removable and replaceable Level 1 CE-certified back protector Multi-material streamlined design for superior body fit which enables top to worn under jersey Removable, slim-profiled, lightweight shoulder protectors Front and back conduits for hydration pack hose