Black Trail Backpack MiniTrail Backpack Mini takes clear inspiration from the Rains classic, Backpack. The design is characterized by its prominent flap and central webbing strap with signature rubberized buckle. This clean and contemporary waterproof backpack has an internal laptop pocket, spacious main compartment, and padded mesh back panel. Trail Backpack Mini is cut in Rains signature waterproof PU fabric, engineered for carrying strength, durability, and a smooth feel.