Keep your travels smooth and your style cool with the all-new Sierra Collection. Classic Corkcicle silhouettes are now available in hues inspired by nature, designed for adventure, and made to last. 18 hours cold, 5 hours hot Spill-proof for mess-free travel Includes spill-proof 360? Sip Lid Pure Taste ceramic-coated interior Slim design to fit bike cages & most cup holders