The Owala FreeSip Insulated Stainless Steel Water Bottle

Key Features
Dual-Way Drinking: The patented FreeSip spout is designed for two different ways to drink: sipping upright via the built-in straw or tilting back to swig from the wide-mouth opening.
Superior Insulation: Triple-layered, vacuum-insulated stainless steel keeps beverages cold for up to 24 hours. It is not intended for use with hot liquids.
Secure & Hygienic Design: Features a push-button lid with a locking mechanism to prevent leaks and a protective cover to keep the spout clean.
Travel-Ready: The 24-ounce size has a cup holder-friendly base, making it ideal for school, the gym, or commuting.
Integrated Carry Loop: A convenient loop at the top makes it easy to carry and doubles as a lock for the lid. 

Specifications & Care
Capacity: 24 Fluid Ounces (approx. 710ml).
Materials: BPA-free, lead-free, and phthalate-free stainless steel.
Cleaning: The lid is dishwasher safe, while the stainless steel cup should be hand-washed to maintain its finish.
Color: "Very, Very Dark" is a sleek, timeless matte black colorway. 
Expert & User Insights
Reviewers from Serious Eats highlight its "frictionless" use and superior cold retention, noting it held ice water under 40°F for 12 hours in testing. Many users on platforms like Reddit praise the bottle for its leak-proof reliability, often reporting they can toss it into a bag with a laptop without worry.