Off Grid trek is great . My top three things that makes this product one of my best investments for emergency preparedness is first, at my age , the fact that the solar blanket takes up very little space, and is very easy to get out and start charging . Second, although there may be days w/ unfavorable skies w/ clouds and wind , the off grid trek 220w solar blanket can still get an acceptable charge when most other solar products won't. Third easy to disconnect, fold and put back into storage. Done !