Each silicone mold makes 4 ice balls about 1.75 inches diameter. The best things about this mold are it seals well and is very easy to extract the ice balls once frozen.
 

Silicone Ice Cube Ball Tray

•      FILLING: These are so easy to fill, and they reliably seal so the water actually stays inside the ball! Each ball mold has a lip around the top edge so the two halves will essentially interlock together, which REALLY helps reduce the number of half-balls you end up with! Most others just overlap without interlocking, which means they are much more likely to leak out the water. Once all 4 are closed, simply fill with water. After filling gently press your finger up against the bottom center of each ball to push out a little water. As water expands when it freezes, this will help prevent overflow in your freezer and result in perfect balls, or maybe with a little frozen nipple on the top.

•      REMOVING: Other ice ball molds I have are such a chore to remove! These are EASY PEASY!! Simply flip open top half using the thumb tab. Then flip it over and push the ball out by pressing your thumb against the middle round section. The ice ball easily pops out!

• Made By Silicone 
• Colour - Blue