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#2 on this list
Wide Mouth 32 oz
Hydro Flask
The insulation benchmark: ice at hour 24, and a flex cap that survives being dropped on talus.
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- Specification researched
#3 on this list
TKWide 32 oz
Klean Kanteen
Climate-neutral certified steel with the best-sealing café cap in the business.
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Specs side by side
| Spec | Wide Mouth 32 oz | TKWide 32 oz |
|---|---|---|
| Capacity | 32 oz (946 ml) | 32 oz (946 ml) |
| Insulation | TempShield Double-Wall Vacuum | Climate Lock™ Double-Wall Vacuum |
| Mouth Type | Wide Mouth | — |
| Material | 18/8 Pro-Grade Stainless Steel | 18/8 Food-grade Stainless Steel |
| Cap Type | Flex Cap | — |
| Claimed Cold Retention | Up to 24 hours | — |
| Cap Type (Std.) | — | Leakproof Loop Cap |
| Weight (Empty) | — | Approximately 1 lb (450g) |
| Sustainability | — | Climate Neutral Certified |
What our reviewers liked and didn't
Wide Mouth 32 oz
- Unmatched temperature retention for hot and cold beverages
- Extremely durable 18/8 stainless steel construction
- Wide mouth makes cleaning and adding ice effortless
- Improved Flex Cap is comfortable and resilient
- Taste-free interior won't retain odors or flavors
- Heavier and bulkier than non-insulated bottles
- Higher price point compared to basic options
- May not fit all backpack side pockets comfortably
TKWide 32 oz
- Exceptional temperature retention for hot and cold beverages
- Robust 18/8 stainless steel construction handles abuse
- Wide mouth design for easy cleaning, filling, and ice addition
- Internal threading prevents grime buildup
- Variety of well-designed, leakproof cap options available
- Climate Neutral certified and B Corp status
- Heavier than uninsulated or lighter insulated alternatives
- Powder coat finish prone to chipping with heavy use
- Tall profile might not fit all backpack pockets
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