Product Details Product Details Signature triple-insulated stainless steel3 hours of cooling power for 12 ouncesFlat easy-grip sidesNo-slip bottomCrystal-clear spill-proof lid Officially Licensed This Purdue Boilermakers Stainless Steel Stemless is a great way to enjoy your favorite drink while supporting your favorite team. This Stainless Steel Stemless features a triple insulated stainless steel.