Review on SUMPRI Ice Cube Tray, Silicone Sphere Whiskey Ice Ball Maker Mold With Lid [Set Of 🍺 2] Large Ice Cube Trays Novelty, Big Square Ice Cube Mold For Cocktails, Reusable & BPA Free (Blue) by Christine Chance

Works as advertised. It's not easy to remove, but it's not impossible either. I noticed a struggle for the squares when I had to push the cube out by pushing it almost completely inside out from the bottom to free it. Now that I know the trick, it's ok if the container can handle it. Round cubes aren't easy either, and we're still looking for a simpler solution. Round cubes are also awkward to fill.