Today's on-the-go lifestyle makes us miss out on our comforting daily routines far too often. Well, enjoying our favorite drink wherever we go is no longer on the list. The Bodum Double Wall Travel Mug goes where you go - in just the right size and just the right color and material for all your endeavors. Let's drink to that. The flow of fluids can be adjusted with an easy turn of the screw within the lid. The Travel Mugs are made from plastic, rubber and silicone. Caution: Please do always keep the mug upright. Due to safety reason, the mug is not leakproof because of possible over pressure.)