Key Features:The Rail pro includes a removable Koroyd CE level-1 certified spine protector, the highly innovative Koroyd material has exceptional impact absorption properties whilst remaining lightweight and well ventilated for long, technical rides,Advanced, reinforced harness and ergonomic form holds loads low and close to the rider to prevent unwanted movement whilst remaining comfortable and unrestrictive,Thule\'s unique magnetic ReTrakt hands-free hose return system keeps your drinking tube safely stowed when not in use but always to hand,Exterior stowage straps for armour, helmets or removable chin guards,Sternum and waist straps aid stability and feature integrated management systems to prevent excess strap flapping around,Carefully organised interior with multiple pockets and a zippered compartment for valuables,Jersey-style elasticated side pockets for easy access in the saddle, ideal for tools or nutrition,Includes 2.5-litre Hydrapack reservoir,Weighs just 1.02 KG with a back protector,Rear loop for mounting a light.