The Iron °Flask Hydration Flask is a 40 oz vessel designed for significant water capacity during hiking, camping, or long gym sessions. It is manufactured using 18/8 food-grade stainless steel with a wall thickness of approximately 0.5mm. This double-wall vacuum insulation is designed to help maintain drink temperatures for extended periods, though users should take care to avoid dropping the bottle when full to prevent the vacuum seal from losing efficiency.
A notable feature of this product is the inclusion of three different lids—a straw lid, a flip lid, and a stainless steel handle lid—allowing the user to adapt the bottle to different activities. The exterior features a powder coat finish, which adds a layer of tactile grip and helps prevent the bottle from "sweating" in humid conditions.
- Generous 40 oz capacity is ideal for individuals who want to carry a full day's water supply.
- Modular lid system provides options for high-flow drinking or convenient straw use.
- The midnight black powder coating offers high friction for a secure hold during movement.
Because the bottle weighs approximately 3.5 lbs when full, it is recommended to carry it by the bottle body or a reinforced strap rather than relying solely on the plastic loops for long durations. To ensure hygiene, especially with the straw lid, it is helpful to soak the components periodically and use a small brush to reach the internal crevices where mold can sometimes form.
For a similar large-capacity bottle that fits better in most standard backpack side sleeves, the Adidas 32 oz Metal Water Bottle is a narrower alternative.
You can organize your large collection of sports flasks using the shelving found in our utility shelf organizers category.
