Keep It Cold. Stay Dangerous. Your drink deserves better than a flimsy foam sleeve—and your dad jokes deserve tactical backup. Enter the Heisenburger Koozie: cold-keeping, crowd-confusing, and proudly unhinged. Slap this on your brew and instantly gain +10 Grill Master credibility. Perfect for cookouts, tailgates, or backyard experiments gone wrong. Jersey knit cloth with foam backing can holder that fold flat Non-Returnable Product May Ship From a Different Location So Please Allow Up To 7 Business Days For Shipping and Fulfillment.