Excellent for travel and regular use [SEP] These are very sturdy bottles with a smooth pump mechanism. I saw no leaking when I used these to fly with shampoo and conditioner recently.<br /><br />Each pump is fairly small and consistent, which makes it very easy to regulate the amount used. I think I will be using these regularly and not just for travel for items without a pump or where the pumps are very inconsistent, like body lotion.