Cirkul 24oz Aqua On-The-Go StrawSip Tumbler 1 Flavor Cartridge (FitSip Star Blast) Shipped USPS Brand new , unopened One 24oz, BPA-free Stainless Steel Tumbler Durable, spill-resistant lid with reusable inner straw featuring StrawSip technology. Innovative tumbler and cartridge system that makes drinking water more delicious, fun, and personalized. Spill-resistant lid Cup holder compatible with added protection ring Double-wall vacuum insulation for prolonged ice retention in chilled drinks Fast shipping