100w etfe portable solar panels, bigblue folding slim camping solar charger with pd 60w type-c+19v dc+2 usb, ip65 waterproof, compatible with laptops, generators, rv battery, tablets, cellphones etc bigblue 100w etfe solar panel: bigblue solar panels combine high quality etfe, uv-resistant eva and efficient solar cells. etfe (ethylene tetrafluoroethylene) is extremely durable and resistant to environmental elements, which is corrosion resistance, waterproof and fire retadancy. double life-span compared to other pet solar panels and the light transmittance is up to 95%, you'll get the good quality and high efficiency together.