Backpack with perforated breathable back. It features lightweight and adjustable mesh shoulder straps, adjustable chest strap with whistle buckle, adjustable waist strap, and breathable mesh lumbar fins. On the hood, it has two pockets, one of which is intended for first aid and features a print with useful numbers in case of emergency. It has 4 functional attachments for applying KIT 3 or Kit 4, on the front it has an elasticated pocket, two elasticated side pockets, and pole holders. It is compatible with hydration systems and includes a backpack rain cover, placed in a dedicated pocket on the bottom.