About this product Cools for many hours: ColdFlow Flip Straw series with sturdy carrying or fixing handle with straw for drinking on the go Double-wall vacuum insulation keeps your drinks cold for up to 12 hours and ice-cold for up to 48 hours Durable and safe: The Stanley water bottle is sturdy and made of high-quality 18/8 Made of stainless steel Food-safe stainless material BPA-free - so the contents can be used safely Leak-proof: This water bottle features a leak-proof straw and a lid lock for convenient drinking and ice cream filling Easily throw this stainless steel mug in your work bag without any ice drips Easy to clean: This thermos bottle is easy to clean. Every part of this stainless steel bottle can be washed in the dishwasher. Lifetime warranty: 'Built for Life' has been the Stanley promise since 1913. Stanley products have a lifetime warranty against manufacturing defects.