The Blackfell 4 45L 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. The integrated emergency whistle and reflective details keep you safe. The medium hiking rucksack is finished with walking pole loops, and there's a detachable raincover for extra protection.