STM Ace Always-on Cargo STM-117-176M-01, Notebook 13in-14in, 1680D ballistic nylon, 600D coated polyester, Zipper, Water-resistant, removable shoulder strap, adjustable shoulder strap, rubber feet, impact-resistant, heat-resistant, rugged, removable accessory pouch, elastic fixation straps, shock absorption, overheating protection. Safeguard your school's investment with the Ace. Designed with direct feedback from educators and district level IT professionals, we have built the ultimate protective bag for the K-12 classroom environment.