Give any cup a straw top in seconds. The Siliskin straw top is a silicone top that stretches over and grips the top of multiple size glasses and in an instant, gives it a straw top and makes it spill proof.
Features: Give your cup a straw top in seconds
Silicone top stretches over and grips top of multiple size cups
Air suction keeps the top in place
Add it to a Siliskin Glass or glass of your choice
Makes in instant, no spill cup
Comes in 3 pack
Recommended use for cups of 3" diameter or less