Keep your cold drinks cold for up to 12 hours and your iced drinks icey for up to 48 hours and stay refreshed and hydrated all day long. The 18/8 Stainless steel, double wall insulated design is expertly built to keep your drinks cold so you can enjoy your drinks for longer. This lightweight, leak-proof design is fully functional making this great for taking with you to stay hydrated no matter the occasion. Designed to fit comfortably in your car, bike or treadmill cup holder and with a comfortable folding easy-to-carry handle, you're bound to be taking your Stanley cup everywhere you go. Keep your drinks colder for longer and enjoy refreshing drinks all day long with the Stanley IceFlow Straw Tumbler Rose Quartz. This leak-proof, double insulated design is perfect for keeping you hydrated no matter the occasion and it's car-cup holder compatible making it super handy.