Promotional Tumblers & Travel Mugs, 30 oz Urban Peak Vacuum Tumbler - 48Hr Ice Retention & Copper Lined, Copper-lined, vacuum-insulated deep draw liner maintains optimal drinking temperatures and provides 8X heat retention Dual walled 18-8 Stainless Steel Lead-free vacuum seal Features a sweat-free design and thumb-slide, screw-on lid Keeps ice for over 48 hours 1-year limited warranty Patented ... #SL235SS $26.20/each.