Premium solution for long-term outdoor use and notebooks up to 43.9 cm (17.3") with a capacity that can be expanded from 32 to 38 litres. High-visibility fluorescent material certified according to EN ISO 20471:2013 Reflective 3M strips, certified according to EN ISO 20471:2013 Water-resistant features according to EN ISO 4920, Level 4 Additional rain cover with 3M reflective strips Sustainable recycling of 23 PET bottles per backpack Clothes compartment for storing work clothes or a change of clothes separately Optimum carrying comfort with adjustable chest and hip straps and ergonomic padding Air-flow system for good air circulation Base made of waterproof TPU Front pocket with three universal mesh compartments and padded room for accessories Carabiner and tab on the hip belt to attach a helmet Two expandable side pockets for drinks bottles Separate valuables compartment on the back Business card compartment on the back