Tumi's latest addition to the Tegra-Lite collection is X-Frame. The X-Frame features a revolutionary three-point locking system with molded corners instead of zipper closure, increasing security, durability and water resistance. Crafted from the exceptionally durable Tegris material, a revolutionary Polypropylene Thermoplastic Composite material created by Milliken for use in lifesaving armor, NASCAR race cars and protective gear for NFL players. The bottom features a latch with a clasp to keep the bag closed. To open, push the button. To close, push the clasp down. Simple, safe and secure.