what i want to know is does it truley hold 20 ounces? The ozark trail claims 20 ounces but only holds 16(18 ounces if filled to rim)

Here's the deal - it may not hold 20 oz, but it keeps your coffee hotter longer than any of the others so you can enjoy it! The 30 oz is too Heavy. The Shorter 14 oz doesn't keep your coffee hot. So, the 20 oz is the best of both worlds! Hot coffee & 16 oz that isn't a strain to carry~! Fill it again when you're done!!

Can you shake a drink with a closed lid, without spilling

I received the 20 oz tumbler with magslider lid for Christmas. It is NOT leak proof. If it turns over or is tilted in your purse or bag, it will and does leak! I just called YETI (01/02/2018) in Austin, Texas and asked about this and they confirmed it is not leak proof. If you need something leak proof, they said to get a YETI with the scree on lid! The magslider is not a good product if you need something that does not leak.

Is there any way to check authenticity, prior to ordering these?

You can view only the ones "Sold by Yeti Authorized" here: https://www.amazon.com/shops/A3VZHMRV3J141P?ref_=v_sp_storefront When the Amazon listing says "Sold by" anyone else, it's usually with a big price markup to get orders for something that is otherwise out of stock or discontinued but they could also be fakes.

Which country was it made?

Both of mine were made in China.

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Description

🧊 Stay cool, stay hot, stay ahead with YETI Rambler 20 oz.

NO SWEAT NO SLIP - No Sweat design keeps your hands dry and grip steady, perfect for on-the-go professionals balancing meetings and adventures.
DURACOAT TOUGHNESS - Vibrant Seafoam finish with Duracoat technology that resists cracking, peeling, and fading—style that lasts as long as your hustle.
MAG SLIDER MAGNETIC LID - Innovative magnetic lid secures your drink with effortless slide action—spill-resistant, not spill-proof, but always on point.
DISHWASHER SAFE DURABILITY - Built for busy lives—dishwasher safe and break resistant, this tumbler is ready for every commute, hike, or home office grind.
UNMATCHED TEMPERATURE LOCK - Double-wall vacuum insulation keeps drinks icy cold for 20 hours or piping hot for 12 hours—your beverage’s personal climate control.

The YETI Rambler 20 oz Stainless Steel Tumbler features double-wall vacuum insulation for superior temperature retention—20 hours cold, 12 hours hot. Its MagSlider Lid uses magnetic technology to reduce spills while maintaining easy access. Crafted with durable stainless steel and a tough Duracoat finish, it’s dishwasher safe and designed with a No Sweat exterior to keep hands dry. Sized to fit standard cup holders, this tumbler is the perfect companion for professionals who demand style, function, and reliability on the move.

Specifications

Brand	YETI
Color	Seafoam
Special Feature	Break Resistant, Dishwasher Safe
Style	Casual
Theme	Outdoor
Recommended Uses For Product	Home, Travel
Included Components	Lid
Specific Uses For Product	Cold Drinks, Outdoor Activities/Sports
Shape	Cylindrical
Pattern	Solid
Product Care Instructions	Dishwasher Safe
Age Range (Description)	Adult
Material Feature	Insulated, leak-free
Reusability	Reusable
Unit Count	1.0 Count
Product Dimensions	3.5"W x 7"H
Number of Items	1
League	ncaa
Finish Type	Matte
Manufacturer	YETI
UPC	888830306109 888830021811
Global Trade Identification Number	00888830021811, 00888830306109
Size	1 Count (Pack of 1)
Item Package Dimensions L x W x H	8.54 x 4.88 x 3.66 inches
Package Weight	0.39 Kilograms
Item Dimensions LxWxH	3.5 x 3.5 x 7 inches
Brand Name	YETI
Warranty Description	NO
Model Name	YETI Rambler 20 oz Stainless Steel Vacuum Insulated Tumbler w/MagSlider Lid, Seafoam
Suggested Users	baby-girls
Part Number	21070060016
Sport Type	Camping & Hiking

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