Under Armour's tried-and-true Xtra small undeniable bag is lightweight and built with incredibly durable materials, your go-to bag for everyday performance.. UA Storm technology delivers an element-battling, highly water-repellent finish. Tough, PU-coated & foam-lined bottom & side panels for added durability & structure. Large vented pocket for laundry or shoes & internal slip pockets for organization. Large front zippered organization pocket & molle webbing attachment points. Dual water bottle slip pocket. Adjustable shoulder strap. Dimensions When Full: 10.6"W x 10.1"H x 21.7"L. Volume: 40L. 100% Polyester