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
20 Fluid
Color
Powder Coated
Material
Stainless
Special Feature
Condensation

💧Sweat-proof, no condensation

🔥Keeps drinks hot 6+ hrs

❄️Keeps drinks cold 24 hrs

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Description

☕ Elevate your coffee game—sip smarter, stay cooler, and never settle for lukewarm!

ALL DAY TEMPERATURE CONTROL - Double-wall vacuum insulation locks in heat or chill, so your coffee stays perfect from morning meeting to evening unwind.
SPILL PROOF ON THE GO DESIGN - BPA-free sliding lid with silicone gasket ensures no leaks, plus a straw-friendly sipping hole for your convenience.
STYLISH LONG LASTING FINISH - Powder-coated navy blue exterior resists scratches, fading, and peeling while providing a comfortable, non-slip grip.
DURABLE SAFE STAINLESS STEEL - Crafted from premium 18/8 304 food-grade stainless steel—rustproof, lead-free, and dishwasher safe for effortless maintenance.
TRAVEL READY CAR CUP HOLDER FRIENDLY - Slim 3.38" width fits snugly in most car cup holders—ideal for busy commutes, outdoor adventures, or gym sessions.

The SUNWILL 20 oz Travel Coffee Tumbler features advanced double-wall vacuum insulation to keep beverages hot for over 6 hours or cold for up to 24 hours. Made from durable, food-grade 18/8 stainless steel with a powder-coated navy finish, it’s designed for everyday use with a BPA-free, spill-proof sliding lid and a slim profile that fits most car cup holders. Perfect for professionals on the move who demand style, functionality, and reliability in their drinkware.

Specifications

ASIN	B07MV6Z896
Age Range Description	Adult
Best Sellers Rank	#387 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #11 in Tumblers & Water Glasses
Brand Name	SUNWILL
Capacity	20 Fluid Ounces
Color	Powder Coated Navy Blue
Customer Package Type	Gift Box
Customer Reviews	4.5 4.5 out of 5 stars (28,028)
Finish Types	Powder Coated
Included Components	Lid, Tumbler
Is the item dishwasher safe?	Yes
Is the item microwaveable?	No
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
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	1.0 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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$U1273

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In stock

Sold byAmazon UruguayDelivered 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 Uruguay.

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