w&p Insulated Tumbler 20oz in Cream. w&p Insulated Tumbler 20oz in Cream. This double-walled, vacuum-insulated stainless steel frame provides unparalleled temperature control to keep your drinks icy cold or toasty warm. A full ceramic coating ensures you only taste your beverage, not the tumbler!. Stainless steel, silicone, & polypropylene. Double-walled, vacuum-insulated stainless steel. Splash resistant sliding drink-through lid. 20 oz. Measures approx 3.6 W x 3.5 H x 7.25 D. Dishwasher-safe. WNDP-WH6. WP-IST-CM. Founded by Josh Williams and Eric Prum, w&p began with one product and a big idea that the things you use to cook, eat and drink could have a positive impact on your life and the world around you. At w&p, they make food and beverage essentials that empower you to live your best life, today. The way we cook, eat and drink is changing faster than ever and they're on a mission to create products that can keep up and carry you through your day. Their methods are simple: Make the best products - inspired by real people - and leave the world a better place while doing it by eliminating waste with reusable products and ensuring responsible manufacturing practices throughout their supply chain.