Name:Car Sound Insulation Mat Material: Rubber Foam Color:Black Thickness: 20mm Size: 50x50cm (LxW) Features: Rubber insulation cottonand self-adhesive Closed Pore Foaming,Good Damp-proof Property Strong sound insulation and absorption performance,heat insulation, damping and antisepsis Good Pliability , good Anti-bending and strong shock resistance Applications: Sound deadening and thermal insulation foam for use within vehicle interior and exterior. Package included: 1Car Sound Insulation Mat Please note: 1.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need. 2.Please allow 0.5-1 inch difference due to manual measurement.(1inch=2.54cm) 3.There are no instructions included in this kit.If you want to know how to use or install it,please contact us by Email.We will provide help as much as possible.