The design is pure GSI genius. The plunger is the mug. No obtrusive rod to poke you in the eye as you drink, no grounds working their way around a flimsy screen. This is the portable coffee press perfected. A precision-engineered inner sleeve acts as a no-mess press and then becomes an additional wall of insulation to keep your coffee or tea hot. The copolyester construction is shatter-resistant and BPA-free, the secure top seals in the heat and helps prevent spills, a nylon-wrapped insulated sleeve adds warmth and protects your hands, and the whole thing fits neatly into your cup holder. Features Unique design uses sliding inner sleeve for cleaner pressing and unencumbered drinking The inner sleeve doubles as an insulating layer to help keep coffee hot Rugged copolyester construction is lightweight, BPA-free and shatter-resistant Spill-resistant top and sealable spout prevents loss of heat and coffee Ballistic nylon-wrapped cosy adds insulation and protection A non-slip base helps keep the cup upright while pressing Fits most cup holders Specifications Capacity: 443 ml Weight: 272g