Timbuk2 Alcatraz Laptop Backpack is a medium-sized, water-resistant backpack perfect for casual and business use. It features adjustable straps, a buckle, hook and loop, and zip closures for secure storage. The backpack has inner pockets, a bottle pocket, key clip, and a laptop sleeve for protection. It is made of durable polyester and nylon materials with a canvas fabric type. The backpack has a black, red, and grey color theme and is designed for men.