The YOSEMITE backpack is probably our favourite. Not only because of its weight of 1160 g and durable material, but mainly because of its versatility.After "rolling" the top part, it becomes a compact backpack for short treks, but when you need it, you can make it a full-size 60+5l. The pack is made from 420 denier nylon, a tightly woven, textured fabric with a weight of 46.6 milligrams per metre, yet it's breathable enough to keep the pack's contents free of condensation.YKK zippers and UTX flex stealth buckles ensure quality and long-lasting functionality.