Does the top lock on? Is it a screw on lid that would not leak if tipped over?

Top has an a rubber o ring. So it doesn't really lock or screw. There might be Slight indentation on the inside of the tumbler so the o ring can "seat". The opening in the top does not close, so if it turns over it would spill through the opening. I have the 32 oz. my wife has the 20 oz. we have both been very impressed with the ice retention. I just got back from South Dakota pheasant hunting. I would leave the hotel with ice water and come back 9 hours later, still with ice in my cup. My hunting buddy couldn't believe it!

Will the 20 OZ tumbler fit in a car cup holder? What is size across bottom of glass?

The 20 oz tumbler fits perfectly in my 2015 Subaru Forester. In fact better than smaller cups that wiggle and wobble.

Has anyone ordered from Pronghorn? I see they're the only option to fill this order and am concerned they carry the fakes. Are they legit?

I just contacted Yeti too (11/4/2017) and the responded as another reviewer stated that Pronghorn is the only authorized dealer and to contact Amazon as any others aren't. I am returning the 2 larger sized to Amazon stating these are not 'authorized' or 'genuine' Yeti products and purchased 2 from Pronghorn. I will be interested to see if there is a difference in the labeling and 'made in China' on these replacements. If there is then i'll update this response. I suggest sticking with only Pronghorn if you want Yeti to honor any warranty.

is it also for hot drinks

I just got my Yetti and bought it specifically to keep my morning coffee hot so I could keep it hot on my desk while working through the morning. This does keep it hot and it is not hot to the touch. I have a Keurig- so I get a K-cup full in the Yetti, drive to work 20 minutes. The coffee is still scalding hot when I get to work. The Yetti keeps the coffee at scalding level for about 2 hours. It stays pretty hot for about 3-4 hours. My office is air conditioned with the temperature being at about 74 degrees. It stays hot for up to 5 hours.

Brand	YETI
Color	Stainless Steel
Special Feature	Vacuum Insulated
Style	20 Oz.
Recommended Uses For Product	Home
Included Components	YETI Rambler 20 oz Stainless Steel Vacuum Insulated Tumbler with Lid (Stainless Steel)
Specific Uses For Product	Hot Drinks
Shape	Cylindrical
Pattern	Solid
Product Care Instructions	Hand Wash Only, Machine Wash
Age Range (Description)	Adult
Material Feature	Insulated
Reusability	Reusable
Unit Count	1.0 Count
Item Weight	4.54 g
Product Dimensions	1"W x 1"H
Material Type Free	BPA Free
Number of Items	1
Customer Package Type	Standard Packaging
Finish Type	Stainless Steel
Manufacturer	YETI
UPC	888830008348 655421798113 014394525988
Size	1 Count (Pack of 1)
Item Package Dimensions L x W x H	7.2 x 3.74 x 3.62 inches
Package Weight	0.39 Kilograms
Item Dimensions LxWxH	1 x 1 x 1 inches
Brand Name	YETI
Country of Origin	China
Warranty Description	as listed
Model Name	YETI Rambler 20 oz Stainless Steel Vacuum Insulated Tumbler with Lid (Stainless Steel)
Suggested Users	unisex-adult
Part Number	YRAM20
Model Year	2017
Sport Type	Camping & Hiking

YETI Rambler Vacuum Insulated Tumbler with Lid

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