SIC Brand triple insulated wine tumblers, 20 and 30 ounce cold or hot beverage tumblers, and 27 oz sport bottles keep beverages cold up to 24 hours and hot for eight. I hand paint them with whimsical sea life, garden flowers and birds, palm trees, or inspirational sayings with waterproof, enamel paint. All tumblers are sweat proof with splash proof lids and are beautiful and strong.