Review on 🌞 SunJack 15W Portable ETFE Monocrystalline Solar Charger for Cell Phones, Tablets - Waterproof, Foldable for Backpacking, Camping, Hiking & More by Kenny Hrdlicka

I used it on a 4 day hike, my iPhone was 100% charged and my maps app was active the whole time. I use it in my cabin while streaming music. Sunny cloudy. I would recommend it to outdoor adventurers. You really want to make sure all 4 corners are secured with straps so he doesn't hit you from behind.