Mugzie Purdue Boilermakers Travel Mug with Insulated Wetsuit Cover, 16 oz, Black Officially Licensed NCAA Travel Mug featuring Purdue Boilermakers team logo 16 Oz Stainless Steel Travel Mug covered with water-proof, neoprene wetsuit material Hand-sewn fabric cover is made from 1/4 inch closed-cell neoprene that is covered with soft, water-proof polyester fabric Stain-resistant cover is printed in hi-resolution and has full-wrap coverage. Spill resistant lid and a non-skid bottom Cushioned cover affords a secure grip and eliminates condensation and sweating. Fits in most car cup holders and the counter-weighted bottom provides stability. Bottom diameter is 2 3/4 Inch