MATERIAL & CONSTRUCTION: Sew on (this product is intended only to sew on fabrics. Backing Fabric: 100% Polyester Retroreflective daytime fabric color - Silver Weight: 3 - 4 oz DESIGN & SIZING Recommended for Medium to heavy Weight Fabrics with shorter life span. Machine washable, shrink resistant, wrinkle?resistant, quick drying, durable colors. Retroreflective sizing options o 1” width Silver – 2.54 cm wide retroreflective material o 2” width Silver – 5.08 cm wide retroreflective material COMPLIANCE ANSI / ISEA 107-2015 – American Standard on High Visibility Safety Apparel Home Wash Cycles: ~ 25 cycles @60??140?? Reflective coefficient: >420 WASH / CARE INSTRUCTIONS. Machine washable Shrink resistant Wrinkle?resistant, Quick drying, Durable colors APPLICATION INSTRUCTIONS THIS PRODUCT IS A SEW ON PRODUCT. It is typical of any sew on fabric and may be sewed on with any home or commercial sewing machine. Sew this product on any typical fabric or product. By design, this product does not heat transfer or stick on any material.