If your gym is a wet, rocky crag, then this is your gym bag. The small, 25L PROLOG 25 BAG is easy to carry, and has durable, waterproof bottom material that allows you to set it down anywhere with confidence. Designed specifically without seams close to the ground and using heavy coated fabrics, this bottom construction protects the gear inside. Built to be abused, the bottom of this pack is constructed from an ultra-durable waterproof material that you can even set down in a puddle. Easy carrying, and 2 internal pockets within the main compartment make the Prolog convenient for daily use or short trips. Waterproof construction, durable materials throughout, and reinforced straps mean your stuff is safe in the Prolog.