New 20 ounce tumblers available now! Forum donation credit with purchase. https://www.wildguzzi.com/Products/products.htm#Tumbler
I still don't understand why these things haven't taken off. I love mine
Here is another one:https://www.facebook.com/marketplace/item/275222350838546/?ref=search&referral_code=marketplace_search&referral_story_type=post&tracking=browse_serp%3Af9b41cb0-f05b-49d1-b3dc-d4401883b71fAgain, no connection with the seller.