Baseballism presents the most functional tumbler in baseball. The Ballpark Tumbler features an ergonomic 33/30 bat handle grip and double walled insulation to keep your drink hot or cold for the day. A spill proof lid tops it off literally. Features: - Hand wash only - 40 oz tumbler - Double Wall Insulation - BP Free - Reusable Straw - 33/30 Steel Bat Handle - Powder Coated - Car Cup Holder Compatible