GLACIER STONES STAINLESS STEEL REUSABLE WHISKEY CHILLING STONES. STAINLESS STEEL CHILLING STONES MADE OF FOOD GRADE STAINLESS STEEL. THIS STAINLESS STEEL IS REUSABLE, SOUND CONSTRUCTION, AND SUPER EASY TO WASH, CLEAN AND REUSE PERFECT GIFT FOR SPIRIT DRINKERS. THE ELITE OF ALL MATERIALS FOR SPIRIT DRINKERS. READY TO USE AFTER ONLY ONE HOUR OF FREEZING LOCKS IN AN FDA APPROVED NON TOXIC EASILY FROZEN GEL TO MAKE THE CHILL LONGER AND STRONGER.