“Loved the printing on the drinkbottles, but the plastic mouthpieces (twist open ones) are awful. When you try to drink from them it sucks in a lot of air as well as water through the nozzle. For the price I paid, I expected the mouthpiece to be better quality. I love the personalised aluminium part though and don't want to give that part up - I've had to go to the supermarket to get comparable lids from other aluminium bottles as a substitute. Disappointed :-(”