The Sidekick Coffee Tumbler is constructed with durable stainless steel and double-wall vacuum insulation keeps coffee and tea hot or cold for hours. Featuring the new, layered Clean-Lock lid, your tumbler is protected from outside germs and locks every drop inside when you’re on the go. When you’re ready to sip, click the push-lock button and drink from the naturally contoured spout connected to the integrated, high-flow splashguard that prevents spills.. Easily grab and move throughout your day with cupholder friendly base and silicone bottom. When you’re ready to clean, the interior silicone seal in the lid can be removed. Hand wash each part or pop them in the dishwasher for an easy clean.