does this fit the old style wide mouth hydroflask 32 and 40 oz?

Hello, Miguel from Tall Ridge here! Yes, this is designed to fit both the newer versions as well as the older generations of wide-mouth bottles. I hope you find this helpful.

Does it fit a 32 ounce?

Caps are universal. Standard and wide mouth is all you need to know. So, yes it will indeed fit a 32 oz.

Would this lid fit on a 40oz wide mouth Hydroflask water bottle?

It does,but you should be aware it's a tight fit. I put mine on a 32oz wide mouth bottle and it seals tight and does not leak when knocked over or held upside down. But putting the lid on and taking it off can be difficult.

Material	Stainless Steel
Colour	Black
Brand	Hydro Flask
Style	Classic
Product Dimensions	8.1L x 8.1W Centimeters
Item Weight	0.01 Pounds
Shape	Cylindrical
Number of Pieces	1
Is Dishwasher Safe	Yes
Is Microwaveable	Yes
Global Trade Identification Number	00810497026892
Manufacturer	Hydro Flask
UPC	810497026892
Department	womens
Item model number	WFX001
ASIN	B06XPLNLBH

Hydro Flask Wide Mouth Lids- Accessory for Wide Mouth Water Bottle

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