The perfect balance of sleek and stable, our signature UltraFlask has a wider form and a durable 3D welded bottom. Soft and pliable material means you can fit it in most pack and larger vest pockets for a snug and secure fit. Topped with our SpeedFill™ Cap for quick refills.

DURABLE

Made of ultra-durable, abrasion resistant TPU & RF welded seams for superior durability and elasticity.