Mouschi B-Three The mouschi B-Three is a high quality, waterproof backpack perfect for working or studying on-the-go. Constructed with oxford texture, the bag is designed to be reliable and durable. The spacious 15.6″ dimension is 42x30x13cm and is lightweight at 0.52 kg. To ensure your devices can be charged anywhere, this backpack comes with an integrated USB plug. High quality Waterproof USB Plug Oxford texture Size 42x30x13cm Weight 0.52Kg