Circular bobbin lace cushion, stylish with gold buttons. Diameter: 50 cm - Color: Purple - Shape: Circular - Decoration: With gold buttons - Thickness: Thin Thank you for viewing. Purchased from a bobbin lace specialty store. I don't remember the price, but I'm sure I used it as my main one. It wasn't cheap. The pins stay in place well and are easy to use because they catch the pins. The inside is definitely not polystyrene. If it were polystyrene, I could make it myself, so it contains something like straw. Regarding the cymbal case, I also bought a carry backpack. It's very convenient for commuting. I am also listing the carry backpack. It's a Cinderella fit.