durable construction - UV & water-repellent materials
low-e insulation - blocks 97% of radiant heat
lifetime warranty & satisfaction guarantee
The measurements of the template you use could be a bit tight. Prob could use an extra 1/4” all around to give it a more balanced fit. It seems like there’s always one side that’s alllllmost hanging on keeping it dark. You could also use a magnet in the top center when the button strap hangs over the back.