I purchased two of these for $17 each to use for camping. However, since owning them I’ve realized they’re also super convenient for traveling with them to hotels or staying overnight with friends where you might want a nightlight in an unfamiliar bedroom or bathroom. They deflate to less than an inch thick so it’s perfect to throw in a backpack or duffle. Mine both arrived at a charge level of two. Was no problem to charge them in partial sun up to level three in a few short hours. So far they’ve kept their full charge, even after weeks of minimal use. In my opinion they’re easy to inflate and deflate. Overall I love them for the purpose I needed them for and think it’s a reasonable price if you can get them for $15 or less because it probably cost less than a dollar to make.
Taking a star off because the buttons are flush on top so it’s nearly impossible to quickly turn on in the darkness. UPDATE: One has popped a hole at the seam because I overinflated it. Again, these are about as high quality as a $1 beach. Doesn’t affect lights but it has an ugly wrinkled deflated look now. Bummer.