This 70W Portable Foldable Solar Panel Mat is constructed from advanced high-efficiency mono-crystalline solar cells which achieves 22.5%-23.5% high efficiency. Convert more solar power into clean energy even if the panel size is very small. It performs better than similarly-rated polycrystalline solar panels in low-light conditions, and much higher than the market's average.The 70W Portable Foldable Solar Panel Mat is ultra-light and compact size , and it comes with a big handle that makes it easy to carry anywhere you go, 2 adjustable kickstands for quick installation or angle adjustment. https://www.chisolar.com/product/foldable-solar-panel-mat/70w-portable-foldable-solar-panel-mat.html