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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🧊 Lock in your chill, unlock your vibe.

GRIP GO - Durable Dracut coating offers a fade-proof, peel-proof finish with extra grip for on-the-move confidence.
EVERYDAY READY - BPA-free, dishwasher safe, and sized perfectly to fit standard cup holders—built for your busy lifestyle.
MAGNETIC MASTERY - YETI’s MagSlider Lid uses powerful magnets to secure your drink, preventing spills and keeping your beverage locked in.
SWEAT FREE STYLE - No Sweat Design means your hands stay dry and your workspace stays clean, even with the coldest drinks.
TEMPERATURE TITAN - Double-wall vacuum insulation ensures your drink stays icy cold or piping hot for hours, no matter the hustle.

The YETI Rambler 20 oz Tumbler features a stainless steel 18/8 body with double-wall vacuum insulation and a magnetic MagSlider lid, designed to keep drinks at the perfect temperature while preventing spills. Its durable Dracut coating provides extra grip and long-lasting color, all in a BPA-free, dishwasher-safe tumbler sized to fit standard cup holders.

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Brand	YETI
Model Number	f6766
Color	All Stainless Steel
Diameter	3.5 Inches
Capacity	20 Fluid Ounces
Material	Stainless Steel
Special Features	Insulated
Item Weight	181 g

YETIRambler 20 oz Tumbler, Stainless Steel, Vacuum Insulated with MagSlider Lid, Stainless

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