Silicone spout requires no compression for easy flow drinking Light valve prevents spills Unique ergonomic triangular shape bottle fits the two-hand grip of a child perfectly. Easy push button open/close lid. Lid pops open at the press of button and locks into place to prevent hitting the child in the face when tipped forward Flexible carry handle Bumper (removable) for added durability and protection Large opening to easily refill and insert ice cubes