I'm wondering with the large mug + 17 oz it could be a little heavy to lift. What is the weight of the mug?

I am approaching 80 & lift this puppy with my left hand. These mugs are the greatest ever....bar none. Now go buy a pair, U won't regret it !

From frequent washing, even hand washing, has anyone experienced loosening or breakdown of the silicone sleeve?

I haven’t owned mine very long (maybe a month) and I always hand wash. The quality seems superb and based on its current condition, I don’t anticipate the silicone drying out or cracking or otherwise being damaged anytime soon, if at all. These mugs are the only ones I use now and beside of the flat bottom work perfectly to keep my beverage hot when used with my mug warmer. I don’t regret this purchase at all. Word of caution...DO NOT hold the mug by the bottom (fingers underneath) when pouring hot liquids in it. You will get an instant burn.

Do these cups come with any lid?

Yes, every mug comes with a lid, and there is an opening on the lid for putting your stirring spoon or straw. It is quite convenient to use. Hope this helps!

Can you drink from this mug with the lid on?

Yes,but I don't recommend doing so. The lid is not tight and it is easy to cause a spill.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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COSORI Coffee Mug with Lids Set of 2, Stainless Steel Cups with Heat-resistant Handle & Slip-resistant Sleeve, 17 oz, Best Match w/Mug Warmer, for Coffee,Tea,Water,Cocoa, Milk, C1601-CM, Black & Blue

Product ID: 259000284

Details

Brand
Cosori
Colour
Black/Blue
Item weight
481.94 Grams
Material
Stainless
Power source
Corded

☕17 oz capacity for generous sips

🖐️Slip-resistant silicone sleeve & heat-resistant handle

🛡️304 food-grade stainless steel, BPA-free

¥19168

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

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Description

🔥 Elevate your daily brew game with COSORI’s sleek, smart mugs!

ANYWHERE ANYTIME - Lightweight, dishwasher safe, and travel-ready for office, home, or outdoor adventures
PERSONALIZED PAIRING - Distinct black & blue colors to claim your mug and avoid mix-ups—his & hers approved
SIP IN STYLE SAFETY - Wide mouth lid with spoon slot for effortless stirring and spill control
DURABILITY MEETS DESIGN - Premium 304 stainless steel resists rust and chemical leaching—built to last
STAY WARM STAY WINNING - Flat-bottom design perfectly pairs with COSORI mug warmer for optimal heat retention

The COSORI Coffee Mug Set includes two 17 oz stainless steel mugs featuring BPA-free, rust-resistant 304 steel construction. Designed with slip-resistant silicone sleeves and heat-resistant handles, these mugs ensure safe, comfortable sipping. Their wide flat bottoms maximize compatibility with COSORI warmers, keeping your coffee or tea perfectly heated. The set’s black and blue colors help personalize your drinkware, making it ideal for home, office, or on-the-go use.

Specifications

ASIN	B07G9J194H
Brand Name	Cosori
Capacity	482 g
Color	Black/Blue
Customer Reviews	4.3 4.3 out of 5 stars (1,606)
Included Components	COSORI Coffee Mug with Lids Set of 2
Item Type Name	Stainless Steel Cups with Heat-resistant Handle & Slip-resistant Sleeve,
Item Weight	481.94 Grams
Manufacturer	COSORI
Manufacturer Part Number	HTHOHASA08DC
Material Type	Stainless Steel
Model Number	C1601-CM
Number of Items	2
Power Source	Corded Electric
UPC	817915023853
Unit Count	2.0 Count

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¥19168

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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