Toss Designs Flask

Thanks to its double-wall vacuum insulation, this flask is designed for extended temperature retention. While exact times vary based on the ambient temperature, it is built to keep your beverage at your preferred temperature throughout your time on the courts or during your daily commute.

Yes, the flask features a secure, leakproof lid designed specifically for worry-free transport. You can confidently toss it into your tennis bag or purse without worrying about spills.

The flask holds 5 ounces, or approximately 148 milliliters. It is designed as a compact, portable option for quick hydration rather than a large water bottle.

While the stainless-steel construction is durable, we recommend hand-washing the flask to preserve the finish and the integrity of the vacuum seal over time.

While the flask is made of durable stainless steel, we generally advise against using it for carbonated drinks, as the pressure buildup can sometimes compromise the seal of smaller, leakproof lids.