80 mil nominal thickness (.080 of an inch or 2 mm total thickness).
6 mil aluminum layer which helps with both sound dampening and heat reduction in your vehicle.
Super Sticky butyl rubber adhesive backed with aluminum.
Thick black foil with metallic white/ silver logos.
Sheet size: 23.5" x 33.5" folded in three for shipping.
Just under 1 pound per square foot.
Sold in variety packs from 16.5 square feet to our mega bulk pack at 99 square feet.  
FOR BEST RESULTS: Always thoroughly clean surface and heat both metal and sound deadening material before installation.