3F UL Gear Tianshan BackpackWe optimized the RAS back system of the Yue45 to simplify its complex frame. Additionally, we incorporated a curved back panel thats highly ventilated, making it perfect for hot weather. The backpack features the classic Qidian Pro design because, well, we all love it. It weighs under 1kg but can handle up to 15kg of gear. Note: Backpack will come fully assembled but can be flat packed. MATERIALS: 70D&210D UHMWPE Grid Nylon or ULTRA200X BASICS