I love this bottle! My city is already hot (over 90f) and I filled the water from fridge in the morning and left it in my car around 2 hours, and it was still cold!!Few months ago, I bought the water glass bottle because worried of BPA, but I couldn’t stand the smell of mold… (When it gets a room for air, it smells too bad.)This bottle, I didn’t feel any bad smell except the stemless smell (but I can stand it it’s better than mold smell)I’m so happy and satisfied with this bottle!!Pros:No mold smellNo leakKeep the water coldLight weight(way better than the glass bottle)Review by Amazon Customer on March 25, 2016