40oz Insulated Tumblers

Keep your reusable straw covered between sips with these magnetic silicone straw cover caps designed for compatible 40oz tumblers. Built for everyday use, these reusable straw covers help cover the straw opening from everyday dust and debris while adding convenience during travel, work, and daily hydration. ✔ Key Features Magnetic attachment helps keep the cover conveniently attached when not in use. Protective design helps cover the straw opening from everyday dust and debris. Durable food-grade silicone designed for repeated everyday use. Reusable and easy to clean — simply rinse or wash as needed. Snug, secure fit designed for most 10–12mm straws commonly used with compatible 40oz tumblers. Lightweight and portable for everyday use at home, work, school, travel, or outdoor activities. ✔ Perfect For Travel and commuting Gym sessions and outdoor activities Work, school, and everyday hydration Helping keep your reusable straw covered between uses ✔ Compatibility Designed to fit most 10–12mm straws commonly used with compatible 40oz tumblers and similar large drinkware. ✔ Why You'll Love It These magnetic silicone straw cover caps provide a simple, reusable accessory for compatible tumblers, helping keep your reusable straw covered while adding convenience wherever your day takes you. Fits most 10–12mm straws used in compatible 40oz tumblers, including many popular insulated tumblers used for everyday hydration and travel. Pair with a tumbler: Shop our 40oz insulated tumblers with handle for the perfect match.