The first years insulated straw cup – Dino insulated, features a silicone straw spout that helps keep liquid away from teeth and is textured to encourage your child to sip from the top portion of the straw. great for families on the go, the silicone valve prevents leaks so that drinks stay inside and off of your little traveler. kids will drop things, but the sippy cup lid has a drop guard bumper that helps prevent breakage.