Shimano Hotaka H24 X-Alps 24L Hydration Pack - GRAPHITE BLUE Helmet Holder:This versatile clip allows you to securely attach your helmet to the bag. Eyewear Holder:When you take off your eyewear, you can hang it in this dedicated holder. Armor Storage: This lightweight structure provides a handy place to store your protective gear or a jacket, without adding excess bulk or weight. 3D Ventilated Back Panel:The 3D anatomical structure ensures a rider specific fit and promotes air flow for improved ventilation..