3M Automotive Window Film Colour Stable series film appearance rivals tinted factory glass, never turns purple, and provides high heat rejection with no signal interference! 3M's revolutionary nano-carbon polyester provides an incredible look and amazing colour stability Rejects up to 57% of the heat coming through your windows, Available in 4 VLT's (5%, 20%, 35%, 50%). The Colour Stable Auto film series can be used for Glare reduction in Flat Glass installations. The Colour Stable Auto film Series is a non-metallized window film that interfere with mobile devices, GPS or satellite radio reception, blocking up to 99% of ultraviolet (UV) light Comprehensive Auto Warranty from 3M (Limited Lifetime for original owner).