Ultra light weight backpack Extend RIOS with the volume 8L is an ideal solution for your daily bike rides. Wide opening main compartment zipper allows you easy and fast access to smaller inner compartments with tubes, tools, keys, repair set at any time you need. Well ventilated and fully flexible back system material provides you comfort while wearing it.Perforated shoulder straps allow perfect adjustment, no matter to women or men body.Extend RIOS is made of durable, lightweight material Nylon 420 Ripstop, with some parts made of Polyster 600D (bottom part).Features: • Measurement: weight 18 cm/ height 43 cm/ deep 9 cm • Weight 450 g • Kapacity 8L • perforated and well flexible back system• mesh helmet holder(removable)• water bladder compartment (kompatible to Extend FLUIDER 2L)• reflective details for enhanced safety• safety light loop • 2 mesh side compartments