Looking for a mug with a secure lid that doesn't leak....has anyone who has purchased this cup had issues with leaking?

I hope someone talked you out of this mug. The lid does NOT screw on, so when a hot beverage is in the mug, steam builds up (because you have the lid all closed to prevent spillage) and bam! Off flies the lid spilling very hot drinks! With cold drinks there is no problem. The lid is secure. In fact it is hard to remove unless you open the drinking part for air to release the suction!

How many ounces of liquid will the 20 ounce tumbler actually hold?

It holds only 16 ounces! With the lid in place, 16 ounces of liquid comes right up to the bottom of the lid. I did measure it with a measuring cup (twice) just to be certain. It will hold 20 ounces only if you fill it right to the rim. This seems to be the case with EVERY stainless steel insulated tumbler available for sale under every brand I have tried, and it's very aggravating. I'd like to find an insulated tumbler that actually holds 20 oz. with the lid on!

Does this have a non slip silicone base?

No it does not but I like the cup.

Do yeti lids (with the magnet slider) fit this tumbler?

The Yeti mag lids do fit this tumbler. I prefer the magnet lid as its easier to clean. You can purchase separately (either Yeti or generic). I bought the generic lid and it’s identical except it doesn’t say YETI on the magnet.

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SUNWILL Travel Coffee Tumbler 20 oz, Insulated Mug with Lid, Stainless Steel Cup for Outdoor, Powder Coated Navy

Product ID: 105817042

Details

Brand
SUNWILL
Capacity
1.3 pounds
Color
Powder Coated
Material
Stainless
Special Feature
Condensation

💧Sweat-proof, no condensation

🔥Keeps drinks hot 6+ hrs

❄️Keeps drinks cold 24 hrs

18085CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

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Description

☕ Stay hot, stay cool, stay ahead with SUNWILL.

BUILT TO LAST SAFE - Premium 18/8 304 stainless steel ensures durability, rust-free use, and BPA-free safety for your health-conscious lifestyle.
SPILL PROOF ON THE GO - Silicone gasket sliding lid with straw-friendly design means zero spills during your busiest commutes or outdoor adventures.
STYLISH DURABLE FINISH - Powder coated navy blue exterior resists scratches and fading, offering a sleek, modern look that stands out in any setting.
ULTIMATE TEMPERATURE CONTROL - Double-wall vacuum insulation locks in heat or chill for hours, so your coffee or iced drink stays perfect all day.
DESIGNED FOR ACTIVE PROFESSIONALS - Fits perfectly in car cup holders and gym bags—your ideal companion for work, travel, and weekend escapes.

The SUNWILL Travel Coffee Tumbler is a 20 oz insulated stainless steel mug featuring double-wall vacuum insulation that keeps beverages hot for over 6 hours and cold for up to 24 hours. Crafted from premium 18/8 304 food-grade stainless steel, it is durable, rust-resistant, and BPA-free. Its spill-proof sliding lid with a silicone gasket ensures easy sipping and prevents leaks, while the powder-coated navy finish offers a stylish, scratch-resistant exterior. Perfectly sized for car cup holders and designed for active lifestyles, this tumbler is dishwasher safe and ideal for coffee lovers on the go.

Specifications

ASIN	B07MV6Z896
Age Range Description	Adult
Best Sellers Rank	#375 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #7 in Tumblers & Water Glasses
Brand Name	SUNWILL
Capacity	1.3 pounds
Color	Powder Coated Navy Blue
Customer Package Type	Gift Box
Customer Reviews	4.5 4.5 out of 5 stars (28,518)
Finish Types	Powder Coated
Included Components	Lid, Tumbler
Item Dimensions W x H	3.38"W x 6.75"H
Item Type Name	tumbler
Item Weight	11.52 ounces
Manufacturer	SUNWILL
Material Features	Food Safe, Insulated, Never Rust, Recyclable
Material Type	Stainless Steel
Material Type Free	BPA Free
Model Number	TravelTumbler
Number of Items	1
Occasion	Birthday, Communion, Father's Day, Graduation
Other Special Features of the Product	Condensation Resistant, Double Wall, Sliding Lid, Spill Proof, Vacuum Insulated
Pattern	Solid
Product Care Instructions	Dishwasher Safe
Product Style	Modern
Recommended Uses For Product	Beach, Camping, Coffee, Drinking, Home, Ice Cubes, Office, Outdoor, Travel
Reusability	Reusable
Shape	Round
Size	20 Ounces
Specific Uses For Product	Cold Drinks, Hot Drinks
Subject Character	Navy Blue
Theme	Adventure, Beach, Sports
UPC	670924518426
Unit Count	1 Count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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18085CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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