GSI Boulder 10 Flask

The co-Polyester construction is light-weight and eco-friendly. The shatter-resistant body and grippy, silicone bumper mean this flask can go anywhere. 

• NO METAL: Tough and shatter-resistant, the Boulder Flask can stand up to nearly any outdoor adventure; Thermoplastic resin body keeps your drink of choice intact
• Wide mouth opening makes for easy filling, pouring and drinking; Molded graduation marks help you quickly measure or see what’s left while you’re on the trail
• See-through design for a fun and novel drinking experience; Hinged top with grippy silicone bumper makes for easier opening, helps prevent leaks and ensures you won’t lose the cap
• Weighing only 4 ounces empty, the Boulder Flask won’t weigh you down even after you fill it
• This BPA-free flask is durable, safe to drink from, and doesn’t have any foul or “off” aftertaste

Dims.: 3.7" x 1.1" x 6.5" (94 x 28 x 165 mm) Weight: 4.3 oz. (122 g) Size: 10 fl. oz. (532 ml)