The Blackfell 4 25L medium-sized backpack from Regatta is perfect for hikes. The lightweight but durable polyamide ripstop provides lasting wear and the water-repellent finish keeps your items safe. The Tecfoam padding and air mesh fabric and ventilating channels enhance breathability to keep you fresh on the go. You'll easily stay hydrated with the convenient internal hydration storage pocket with a drinking tube retainer. The adjustable chest strap, side compression straps and low-ergonomic shoulder straps ensure a comfortable fit. Whatsmore, the backpack features an Adjustfit carry system that allows for back length adjustment from 43cm to 50cm. The integrated emergency whistle and reflective details keep you safe. The hiking rucksack is finished with walking pole loops. Features: Top lid design with large zipped pocket Padded Air Mesh back panel for moisture management   Large main compartment External side bottle pockets  Padded shoulder straps Adjustable sternum strap Durable wat