Take your books, clothes and other items with you while on the go using the Under Armour™ Undeniable Sackpack, which is made of 100% polyester with a side-seam, tricot-lined valuables pocket to hold your accessories. The front panel features a D-ring that adds an extra point of attachment, and the adjustable, single-cord strap offers easy transport. Sternum clip. Under Armour™ logo at the front panel.