Cedar 40oz Era TumblerThe Cedar 40oz Era tumbler keeps spills at bay with its tight sealing lid, so your fizzy drinks stay put and refreshing. With the ColdKey stainless steel straw and BevGuard tech, your ice stays rock solid for 24 hours straight. Plus, its base slides right into most cup holders, making it your fun sidekick for every adventure on the go! Era Tumblers are 100% leakproof with cold beverages and carbonated beverages with ice when in the locked position.