ULTRASPIRE HANDHELD WATER BOTTLES

Choose the Iso Pocket 3.0 if you want a structured 600ml bottle with an expanding zipped pocket for nutrition, keys or other small essentials. The Iso Versa 2.0 uses the same capacity and structured bottle approach but positions the load differently, with multiple hand positions and the option to move it farther towards the wrist or arm.

The 550 Pocket combines a more flexible 550ml hybrid bottle with expandable zipped storage. The 550 Race 2.0 uses the same hybrid bottle approach in a more minimalist design without a storage pocket.

Start by deciding whether you prefer a structured or more flexible bottle, then whether you need storage and which retention system best suits how you want the bottle to sit on your hand.

Both use a structured, squeezable 600ml LDPE bottle. The main difference is the carrying system. The Iso Pocket 3.0 uses an adjustable compression strap and adds an expanding zipped pocket, making it the more conventional choice if you also want storage on the hand.

The Iso Versa 2.0 uses dual-sided adjustment and allows different hand positions, with the bottle sitting farther towards the wrist. It can also be moved farther up the wrist or arm when you need greater use of the hand, including when handling trekking poles.

Both use UltrAspire's 550ml UltraFlask, a hybrid design that combines flexibility with enough structure to retain its shape better than a fully collapsible soft flask.

Choose the 550 Pocket when you want expandable zipped storage for small items as part of the handheld. The 550 Race 2.0 removes the pocket for a simpler, more minimalist setup, using breathable mesh, soft perimeter binding and quick Velcro adjustment to secure the bottle.