The EcoFlow 220W Bifacial Solar panel is foldable, compact and weighs just 9.5kg (20.9lbs). Easy to pick up and carry with you, its perfect for charging where mains power is unavailable. Charge your portable power station faster with this two in one solar panel. With a 220W front side and a 155W rear side for ambient light, you can gain an extra 5-25% solar energy, depending on the type of surface you put it on. The EcoFlow 220W Bifacial Solar Panel is built to withstand mother nature. It has a thin, one-piece tempered glass design making it 5x more durable than comparable solar panels. It comes complete with an IP68 Waterproof rating meaning its both water and dust resistant. When used with an EcoFlow power station, the 220W Bifacial Solar Panel is geared to produce maximum efficiency. The solar panel has a high energy conversion rate of 22%-23% too.