Having a portable solar generator like the Jackery Explorer 240 comes in handy for all kinds of scenarios, like when you’re in a severe weather situation and need a reliable power source for your devices, a CPAP machine, an emergency radio, a mini-fridge, etc. Or, maybe you’re just out camping or at a tailgating party and want to keep your gadgets/cameras/drones charged.

Whatever the case, Rockpals’ 100-watt foldable solar panel is a great way to recharge such a generator. It easily unfolds from a travel-friendly, briefcase-sized 20.5″ x 14.2″ x 2.6″ to four mono-crystalline panels that reach a full 64.5″ in length and are 21.5–23.5% solar efficient. If you’re wondering, that is a really good figure, better than most consumer solar panels on the market.

The panel includes adapters to work with most solar generators out there, and it has three USB ports tucked inside the front pouch, one of which supports Quick-Charge (QC) 3.0 for rapidly juicing up any compatible phone or other device. The fabric that surrounds all of this is a durable, water-resistant Oxford cloth that should hold up to all but the worst elements.

Get the Rockpals foldable solar panel for $215 on Amazon.