The SINNER backpack MASSIF in black is a versatile 20-liter backpack designed for outdoor adventures and everyday use. The combination of a waterproof tarpaulin inner layer and durable polyester exterior helps protect your belongings from water and wear. Features include a roll-top closure, front pocket, detachable inner pocket for valuables and a removable waterproof phone pouch on the shoulder strap, while padded shoulder straps and adjustable chest and waist straps provide comfortable carrying.