Premium Stainless Steel high grade stainless-steel cup that's impact resistant, long lasting, soft to touch and recyclable Insulated Cup - dual wall vacuum insulated bottle to keep your protein shakes perfectly chilled Superior Mixing integrated and easily removable agitator for the perfect mix no rattling shaker ball, no mess Leakproof Lid & Carry Loop ergonomic flip-cap sports lid with ultra-performance seals and convenient carry-loop for portability leakproof guaranteed Easy to Clean snap-fit agitator and curved cup makes for easy cleaning. Great Fitness Gift! Built to last a lifetime.