PRYM 610319 | Black & White Polka Dot Print Dressform Pin Cushion | 7.2x7.2x28cm Prym Dressform Pin Cushion. Polka Dots design in black and white fabric. Dimensions: 7.2 x 7.2 x 28cm. Have your pins easily to hand. Foam-backed nylon covering allows easy pinning and marking.