This drinkware option from Corkcicle is 100% leakproof, making it ideal for you to put it in a bag, place it inside your car cupholder, or carry it around by its comfortable grip handle. The Corkcicle Leakproof Cruiser has a soft silicone straw, nonslip silicone base, and a lid that twists easily to close or be separated for cleaning. It’s also dishwasher safe, fits most cupholders, and keeps your drinks cold for up to 20 hours.