This vacuum insulated 12 ounce TKWide bottle was created with versatility and portability, to create the best water bottle, coffee mug, sport bottle and insulated cup, all in one package. The 12 oz TKWide features the TK Closure™ internal thread design with smooth, rounded lip for comfortable drinking and easy cleaning. Comes with the leak proof Café Cap. THIS MUG HOLDS TEMPERATURE EXTREMELY WELL