★★★★★ 2
Check the measurements
Color: Black
Looked cool but it was the wrong size. It was too big.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 15, 2026
20 oz. Tumbler Glass Insert
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
20 oz. Tumbler Glass InsertBACK IN STOCK ON JUNE 30TH The Only Tumbler That Doesnt Ruin Your Coffee! Glass lined = no metallic taste. Keeps drinks hot or cold for hours. Leak proof, dishwasher safe. Our insert fits most 20 ounce tumblers and holds 16 ounces of liquid (14 ounces with the lid on). Upgrade your tumbler and enjoy the purity of your beverage. Dishwasher safe and with a slide close lid, you can use it for hot or cold beverages. Please reach out to us at
Quick Dispatch:
Your 20 oz. Tumbler Glass Insert orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your 20 oz. Tumbler Glass Insert ships.
Need Help?
Questions about 20 oz. Tumbler Glass Insert, sizing, or delivery? We're just an email away.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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Product Reviews
★★★★★ 5
Useful
Color: Black
It works for a key holder, but if the keys are heavy, you may have a problem.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 27, 2026
★★★★★ 5
Novelty quality plastic, gorgeous color, and sturdy
Color: Purple
I was a little surprised when I took it out of the pkg. It seemed flimsy. It holds whatever I put in any position, perfectly balanced.
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Reviewed in the United States on January 12, 2026
★★★★★ 4
Plastic key holder
Color: Black
A little light as it is plastic, but it does the job
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Reviewed in the United States on March 16, 2026
★★★★★ 5
Great for keys
Color: Black
I haven’t misplaced my keys since I bought it. I do wish it were a little heavier in weight but it gets the job done
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026
