Uses X-PAC, a lightweight waterproof technical material with excellent tear resistance. Developed by the American sailmaker Dimension Polyant, the world’s foremost sail maker, X-PAC has been getting a lot of attention recently by not only outdoor gear makers but the fashion world as well. The fabric is created by criss-crossing polyester threads then sandwiching them between layers of thin ripstop nylon. Constructed in a Japanese factory using made in America materials. Pocket with zipper closure at front. Main compartment with zipper opens wide for ease of access. All zippers are YKK waterproof zippers. Internal pocket can be used to hold small items such as keys. Bungee cords at the bottom of the bag allow the wearer to store a windbreaker or travel umbrella with ease. 3D mesh pocket on reverse side also functions as a cushion, and improves airflow between the bag and the body. Tabs on the sides of bag can be used with carabiners or hooks. Can be worn crossbody or as a waist bag.