An efficient portable solar charger should be part of your gear, anytime you’re on the go. But you also want to keep weight to a minimum. To help you achieve just that, the guys at YOLK have introduced the w aterproof and ultra-portable Solar Paper.

Touted as “the world’s thinnest and lightest solar charger”, this thing is 0.15-inch thin and weighs a mere 4 oz, so you can easily carry it around. Its design features a set of folding solar panels held together by strong magnets with silicon connectors. This allows for the addition of extra panels in case you need more power to charge a tablet or a larger gadget. The basic model produces 5 watts- enough to juice up your smartphone in just 2.5 hours  (on a sunny day), which is similar to a wall charger. The device also allows you to charge anything that comes with a USB, including flashlights, cameras, batteries, walkies talkies and more.

Buy from Amazon $148

YOLK Solar Paper 1

YOLK Solar Paper 2

YOLK Solar Paper 3

YOLK Solar Paper 4

YOLK Solar Paper 5

YOLK Solar Paper 6