NWT RAINS Rolltop rucksack mini W3 Color laser (blue) Rolltop Rucksack Mini is a downscaled version of Rains Rolltop Rucksack. The design is a city-ready staple, perfect for commutes on bike or foot. The look is characterized by a tactile strap, signature carabiner and rolltop opening. The waterproof bag also features a back zip pocket, padded back panel and a rubberized front D-ring ideal for holding bike locks. Rolltop Rucksack Mini is cut in Rains signature waterproof PU fabric, engineered for carrying strength, durability, and a smooth feel.