GoSili - Universal Sippy Tops - 2 Packs
The Siliskin Sippy Top is a universal silicone top that stretches over and grips the top of any size cup while air suction keeps the top in place. New design for added stretch and durability. Add the Siliskin Sippy Top to the Siliskin Cup, Siliskin Glass or any cup of your choice to make it an instant sippy. It comes in blue/lime colors.