Introducing high-quality, vacuum insulated, double-wall stainless steel and dishwasher-safe KONA tumbler. Whether you're on the go, working from your home, office, or chilling around a campfire, you can count on KAILANI drinkware to keep your coffee hotter, longer, and ice in your drinks until the last sip. NO MORE SPILLS LEAK-PROOF LID No more spills with our leak-proof tumbler lid made from highly durable BPA-FREE Tritan™ material. Every KONA tumbler comes with OAHU leak-proof lid, but you can also buy it separately.