Owala FreeSip 40oz Insulated Tumbler with Dual-Sip Spout
Insulated Tumblers
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As of Jul 8, 2026 
🔥 #95 in Insulated Tumblers · New Best value insulated tumbler with dual-lid versatility
IRON °FLASK Classic 24oz Insulated Tumbler
IRON °FLASK 3.6
#95
in Insulated Tumblers
$18.99 →
As of Jul 8, 2026
AI-estimated. See how we score. How we score Affiliate link — we may earn a commission
01 / Spec
Top features
Capacity24 oz
InsulationDouble-walled vacuum insulation
Material18/8 stainless steel with powder coat
The IRON °FLASK Classic Tumbler 24oz is a double-walled vacuum-insulated stainless-steel tumbler designed for all-day hydration. It features 18/8 stainless steel construction with a powder-coated exterior and laser-engraved logo. The tumbler keeps drinks cold for up to 16 hours and hot for up to 4 hours, making it suitable for both hot and cold beverages.
Key features:
- Includes TWO insulated lids: a splash-proof straw lid with two straws and a leak-proof flip lid
- Slip-proof, noise-proof rubber bottom (built-in coaster)
- Cup-holder friendly (fits most car cup holders)
- BPA-free design
- Available in multiple sizes (16oz, 20oz, 24oz, 32oz)
At $18.99 (24% off list price $24.99), this tumbler offers strong value for everyday use and travel. It appeals to budget-conscious hydration enthusiasts who want reliable insulation without premium pricing. The dual-lid system provides flexibility for different drinking scenarios.
02 / Signals
Why it's hot
Affordable double-wall tumbler with dual lids and proven ice retention.
- Value for money 98
- Review rating & velocity 86
- Community sentiment 83
- Brand reputation 82
- Search heat 70
- Est. return & defect rate 85
03 / Verdict
Pros & cons
Pros
- Excellent value at ~$0.79/oz
- Includes two different lids (straw and flip)
- Holds ice up to 16 hours
- Fits most cup holders
- Slip-proof rubber base
- BPA-free stainless steel
Cons
- Hot retention only 4 hours (shorter than category leaders)
- Straw can be difficult to clean thoroughly
- Lid may leak if tipped depending on which one used
- Paint/powder coat may chip with heavy use
Capacity24 oz
InsulationDouble-walled vacuum insulation
Material18/8 stainless steel with powder coat
Lid TypeTwo lids: splash-proof straw lid + leak-proof flip lid
Straws IncludedYes, two straws
Cold RetentionUp to 16 hours
Hot RetentionUp to 4 hours
Cup Holder FitYes, fits most cup holders
Dishwasher SafeNot specified
Dimensions2.76" W x 8.5" H x 2.76" D
WeightNot specified
Bpa FreeYes
05 / Your take
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06 / Rivals
Compare with
07 / Variations
Other colors & sizes
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#90 in Insulated Tumblers
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IRON °FLASK Classic 24oz Tumbler (Sage)
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IRON °FLASK Classic 24oz Insulated Tumbler
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Iron Flask Classic 24oz Tumbler – Midnight Black Flip Lid
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IRON °FLASK Classic Tumbler 2.0 – 24oz Insulated Stainless Steel with Dual Lids
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