Protect Heat-sensitive Fabrics: foam cover pad is designed to protect garments and enhance heat fer application during heat printing, especially on heat-sensitive materials like nylon. It helps prevent scorching, protects buttons, zippers, and snaps, and can be used to create a strong bond between the heat fer material and the fabric. Three Thicknesses to Meet Different Needs:These heat cover help when heat applying dimensional emblems and patches with a heat . We recommend the thicker the emblem, the thicker the pad you use. The 4Inch x 8Inch pad is available in 3 thicknesses: 1/8Inch,1/4Inch and 3/8Inch. The 4Inch x 8Inch pad size is ideal for applying small . Even Pressure: Heat pad helps distribute pressure evenly across the design area, ensuring a consistent bond between the heat fer material and the garment, even when pressing around seams, zippers, or buttons. Two Ways to Use: The to use a silicone foam pad is to place it over the design area to protect the garment from , and another way to use it is to place it under a T-shirt to provide support and more even pressure.The combination of these two methods can provide extra protection for your clothing while achieving a more perfect heat fer effect. Widely Application: It can be used with various heat fer materials and on different garment types, including those with buttons, zippers, and other embellishments,making it suitable for customizing T-shirts, blanket,pillow,hats, mugs, and more. Color:Grey Material:Silicone Package Contents: 3 * foam cover pad Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.