Ufo water cup is specially designed for children of different ages. The inspiration comes from the UFO that widely loved by all the children. It’s water filter tip is built inside the transparent cap with the liquid silica , and it can be replaced by two types: Duckbilled+ gravity ball for 3 months to 2 years old; Direct drinking filter for 2 to12 years old. The body is made of Tritan, which has the advantages of excellent clear and transparent physical property, good chemical hydrolysis resistance, perfect shock strength, and BPA free.