Mylar is the best reflective material, it looks like super-mirror. Super flexibility, high machinery intensity, double side, super shined makes the most efficient use of your lighting by reflecting light onto your plants. Size: 52"x100' or 1.32Mx30M Width: 52" or 1.32m Thickness: 50mic/2mil/0.05mm Material: PET film Hydroponics Foylon Unable to scan through. Double sided. Harder to rip. One side is fire proof. Able to stand heat. Super flexibility. High machinery intensity. Super shined. Size: 52 " x100 ' or 1.32mx30m Width: 52 " or 1.32m Thickness: 50mic/2mil/0.05mm Hydroponics Black & White Poly Filmes Size: 10x100' or 3x30m Color: black & white Thickness: 5.5mil, 6mil or 8mil