I ordered 3 bottles from Clim8. We are very happy about this product. You can choose different colours, sizes and personalized your product if you like to. Hot drink stay warm for more than 8 hours. Is not burning hot but still be warm. Cold drink stay very cold for really long. I think over 12 hours. I do like my bottle and my daughter and husband love theirs too. Delivery was absolutely fantastic, I got my order in 2 days. Very surprised. Packed nicely and is little bag covers for each bottle. Thank you very much for your lovely products.