| Tumblers with Lid 20 oz Insulated Customize| Stainless Steel | Wedding Gifts Quote | Family and Friends *20 oz, vacuum insulated * stainless steel with lid and stainless straw Our stainless steel tumblers are double walled to keep cold drinks frosty cool and hot drinks toasty warm. The steel tumblers are built tough to resist accident prone drops, dents and rust, and also a breeze to rinse away residue hiding in plastic tumbler pores; Unlike other metal cups, stainless steel won't react with acid heavy drinks. The tumbler is double walled, and vacuum insulated; Therefore, the cups ensure that cold beverages keep cold for few hours and hot drinks; So, it will bring you coolness in summer and warmth in winter.