Altura: THE RETURN OF A CLASSIC ALTURA BACKPACK, REDESIGNED AND MODERNISED IN A GREAT ALL ROUND BAG Having first been introduced in 1997, the Altura Chinook Cycling Backpack returns after 25 years as a redesigned and re-imagined adventure backpack brought up to date with modern fabrics and technologies. The bag uses 100% Polyester with recycled content and a water resistant finish to keep the rain out and your belongings dry. There is a secure helmet carrier and a separate bladder sleeve for when you need to stay hydrated as well as plenty of storage including bottle sleeves for those long days out. Side compression straps ensure a comfortable fit while adjustable / removable waist and chest straps allow you to adapt this bag to your own adventure. FEATURES100% Polyester with recycled contentWater-resistant finishSecure helmet carrierSeparate bladder sleeveZipped lid pocket with key clipSide bottle pockets / stash pocketsAdjustable / removable chest strapAdjustable, removable waist strap and side compression strapsLight loopCOMPOSITIONOuter: 100% recycled Polyester Lining: 100% polyester