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Glacier on the 8 oz body is the winter sport configuration: full capacity, a grippy silicone shell that works with gloves off in the cold, and a shatterproof clear body that will not dent when it hits a lift or a rock. It measures 3.8 by 1 by 5.5 inches.
A steel flask against a hip in freezing weather is genuinely unpleasant, and the metal takes the temperature of whatever is around it. A plastic and silicone body does not, which is the reason this design makes more sense on a mountain than the traditional one does, whatever the traditional one looks like.
Eight ounces is what you want when the day is measured in hours rather than an evening, and refilling is not an option. It is also the size that gets shared, which is normally how a flask gets used at altitude anyway. Nothing else about the design changes between the two sizes.
The construction contains no metal, which some people read as a way past a bag check. That is not what it means. Venues set their own rules about outside drinks, those rules apply regardless of what the container is made of, and the honest benefit here is comfort and durability rather than access.
| Capacity | 8 oz |
|---|---|
| Body material | Tritan, shatterproof and clear |
| Protection | Silicone impact bumper |
| Metal content | None |
| Seal | Leakproof cap |
| Dimensions | 3.8 in x 1 in x 5.5 in |
| Cleaning | Top rack of the dishwasher |
| Other | BPA free |
| Color | Glacier |
| Model | 8 oz Hip Flask |