The Corkcicle Cold Cup is the straw tumbler perfected. The triple-insulated stainless steel keeps drinks cold up to 12 hours and hot up to 5 and the ceramic coated straw provides a smoother, more comfortable drinking experience. The easy grip sides, non-slip bottom, and spill-proof lid makes this perfect tumbler to take with you anywhere without losing a single drop. The cup holder friendly base makes this straw tumbler travel friendly, from the office and the gym, to weekend errands and tailgates.