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 Coffee Tumbler, 20 oz Insulated Travel Mug Stainless Steel

SUNWILL Coffee Tumbler, 20 oz Insulated Travel Mug Stainless Steel

Product ID: 142223201

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

21197CFA

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.

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Description

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

ECO CHIC EASY CARE - Reusable, dishwasher safe, and lead-free—make a sustainable choice without sacrificing modern aesthetics.
FITS YOUR ACTIVE LIFE - Compact 20 oz size fits most car cup holders—ideal for commuting, camping, gym sessions, or office hustle.
SPILL PROOF ON THE GO - BPA-free sliding lid with silicone gasket ensures no leaks, easy sipping, and straw-friendly convenience for your busy lifestyle.
ULTIMATE TEMPERATURE CONTROL - Double-wall vacuum insulation locks in heat or chill for hours, so your coffee or iced drink stays perfect all day.
BUILT TO LAST DESIGNED TO IMPRESS - Premium 18/8 304 stainless steel with a sleek powder-coated finish resists rust, scratches, and fading—durability meets style.

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 durable, rust-resistant 18/8 304 food-grade stainless steel with a premium powder-coated finish, it includes a BPA-free, spill-proof sliding lid with a silicone gasket. Designed for active professionals, it fits standard car cup holders and is dishwasher safe, making it the perfect companion for travel, office, and outdoor adventures.

Specifications

ASIN	B07STJ9PTF
Age Range Description	Adult
Best Sellers Rank	#376 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #7 in Tumblers & Water Glasses
Brand Name	SUNWILL
Capacity	20 fluid ounces
Color	Powder Coated Black
Customer Package Type	Gift Box
Customer Reviews	4.5 4.5 out of 5 stars (28,220)
Finish Types	Powder Coated
Included Components	Lid, Tumbler
Item Dimensions W x H	3.37"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, Camping, 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	Black
Theme	Adventure, Beach, Sports
Unit Count	1 Count

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

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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21197CFA

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

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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2 weeks ago

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