Stay on the grid with Goal Zero's Yeti 500X Solar Kit with Boulder 50. Charge your Yeti 500X at home or on the go with the Boulder 50 to keep medical devices, phones, tablets, and even portable fridges running while camping or adventuring. The Boulder 50 features a kickstand so you can get the best possible angle for harnessing solar power and the Yeti 500X has a handle for easy and convenient transportation and storage.