Wafer thin, lightweight, and can mold to a curved surface. The NATURE POWER 60-Watt Semi-Flexible Solar Panels are made of high efficiency SUNPOWER mono-crystalline solar cells and strong enough you can even walk on them. They are weather, water and corrosion resistant making them the perfect option for marine applications, RVs, camping and emergency back-up power generators. These Panels can continuously recharge your 12-Volt batteries (not included) with the power of the sun. Light enough to mount on a window with suction cups, and durable enough to mount permanently outdoors using glue, double-sided tape or mounting screws.