The Oak Mountain Outdoors 20 oz tumbler is supplied by Big Frig. Dual walls are cold formed out of 18/8 stainless steel (a.k.a. 304 stainless steel) and vacuum insulated for outstanding temperature retention. A copper lining on the inner wall helps evenly distribute heat or cold throughout your favorite drink.
- Easy to Hold
- 5+ Hours Hot
- 50+ Hours Cold
- Fits Most Cup Holders
- Dishwasher Safe
- Sliding Lid Included
- Limited Lifetime Warranty
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