The ZULU Pace 40oz vacuum insulated stainless steel tumbler features a leakproof sealing slider lid, so you can take your favorite drinks with you wherever you go, without worrying about any spills. The vacuum insulation keeps drinks cold for up to 12 hours or hot up to 6 hours. Plus, its oof-proof built-in soft base ensures that the tumbler stays protected from any accidental bumps or drops, while acting like a built-in coast. The crystal clear lid allows you to easily see the contents inside, so you always know how much is left. And, with the optional straw, you can choose to drink from the straw or directly from the lid, providing you with even more versatility.