58% polyester. 42% nylon. Dimension Polyant X-Pac fabric that is durable and water-resistant, combined with Invista silicon-coated Cordura nylon. Reflector stitching for nighttime visibility. Rain lid can be used as a front bag and a map pocket. Mesh side pockets. Carabiner attachments. Drawcord closure. Top handle. Adjustable shoulder straps. Adjustable waist belt. The X-Pac is a technical 30L backpack made from Dimension Polyant X-Pac fabric that is extremely durable and water-resistant, combined with Invista silicon-coated Cordura nylon. Reflector stitching is used to increase nighttime visibility, as pockets are incorporated throughout for easy access. Adjustable shoulder straps and an adjustable waist belt allow you to modify the length to better distribute the load on your shoulders and hips. The pack then comes with a rain lid that doubles as a front bag and/or a map pocket.