Sponge Fridge Magnets: 1. Surface material : PVC+sponge+magnetic 2.Thickness: 2mm Fridge magnet:1. Widely used as advertisement, intellectual, gifts. 2. Surface material : PVC+sponge+magnetic 3. Thickness: 2mm 4. Different designs, sizes, all can be customized. 5. Safe for children, eco-friendly, can supply SGS testing Sponge Fridge Magnets