Day 1 Fitness Stainless Steel Water Bottle Narrow Mouth with Screw Lid (12 oz, 17 oz, or 25 oz) - 3 Size and 8 Color Options - Vacuum Insulated, Double Walled, Powder-Coated Sweat Proof Thermos 17 oz.

I bought one of these as a back up to a different brand I have and let me tell you, I absolutely love this cup! The first night I filled it up with cold water about 630pm and by 530am it was still just as cold as when I got it from the fridge! I was so impressed with it I bought three more, my other cup it would of been warm by morning.

WELL MADE, EASY TO CLEAN, KEEPS FLUIDS COLD OR HOT ALL DAY LONG, WORTH THE PRICE

Muy bueno, mantiene la temperatura bastante tiempo

i don't have a problem with the sizeof the bottle or the mouth opening. i might have a slight obsession with bottles and have a bunch of them, and i mean a bunch. i use some for the summer by the pool when i fill it with ice cubes and most bottles keep the ice for hours. mostly, i love my hot tea and this is how i rate my bottles. for this one, i put the boiling hot water in, after conditioning the bottle with hot water for about 10 min while my tea boiled. i had no problem pouring it in the bottle. there is a nice tight seal and it didn't get air locked from the steam. it feels great in my hand too and looks pretty. the only issue i have is that it didn't keep my tea hot for hours. after the first hour, it was no longer hot but warm which is ok but some of my other bottles keep my tea hot for a few hours. however, it seemed to stay at that warm temp for a few hours. there was no steam escaping so i'm not sure why it cooled down so fast and then held steady. it's probably better for cold beverages. all in all, it's a a good addition to my collection. i actually left it at work today and it will be my afternoon tea bottle. by the way, i bought these long scrub brushes made of silicon from qvc, perfect for getting into the bottles to clean them.

I use it every week, love it. Replacing plastic bottles!