Rains Mens Backpack. SKU: 13000-BLACK. Color: Black. Size: L 11.8 X H 4.7 X W 18.9. Rains Waterproof Backpack. This backpack showcases a signature carabiner closure beneath a sleek flap secured with magnetic snap fastenings. The spacious main compartment is complemented by an external back zip pocket for easy access to essentials, along with an internal zip pocket for organized storage. A flat laptop pocket fits a 15-inch device with a sleeve for added protection. Finished with adjustable backstraps, this backpack combines modern functionality with refined design. 100% Polyester with Polyurethane coating.