BAMBOO LID WITH STRAW: WINSA coffee tumbler made of high grade thickened glass with natural bamboo lid and straw is BPA free, eco friendly, sturdy and enduring. Both the silicone seal and sleeve could be removed. Featuring the silicone lid seal, this water bottle is splash proof. | SILICONE SLEEVE& OUNCE MARKERS: Silicone sleeve prevents condensation from dripping everywhere. With the non-slip grip, our coffee mug is perfect for office and home. 50 Ounce markers help you track your daily hydration with ease. | EASY TO HOLD: Coffee mug coming with an ergonomically designed handle makes it easy to hold. The bamboo sipping lid with straw help you enjoy your beverage while you are on the go. Our tumbler with lid and straw maintains your beverage cold for hours. | EASY TO CLEAN: 50 oz iced coffee cup comes with a reusable 18/8 stainless steel straw wrapped in food grade silicone for comfortable sipping. The wide mouth water bottle is easy to clean and fits large pieces of ice cubes and fruits perfectly. | DISHWASHER SAFE: Mug tumbler with sleek wide mouth design is dishwasher safe. When you are done with your tumbler for the day, just stick it in the dishwasher for easy clean-up.