It often gets very humid and foggy along the Gulf coast. There is nothing that totally eliminates the effects of fog on cycling glasses under extreme conditions. It may be necessary to completely remove your glasses in order to see, especially after working up a sweat. The small size of this cleaner is suitable to carry in your jersey if you also have a dry towel with you. The effectiveness of this item has been marginal for me on days when the relative humidity was above 90 percent.
Construction and materials seem sturdy enough that this should last for several years. It's big enough to hold my cell phone (Samsung S10e, which is not a huge phone) and there's a zippered internal pouch that is useful for stashing ID cards, money, etc. The bag is small enough that it fits into jersey pockets without the end being exposed, which would increase the risk of the bag bouncing out.
There's one subtle feature that's nice but easily over-looked. With the zipper closed there's a bit of cloth (same as the interior is made from) at the end of the zipper that the zipper pull can be tucked into so the pull doesn't rattle around or get snagged on some random item.
I can find only one minor negative issue with this bag. Even though the internal zipper pull is fairly small, it seems like that might damage my phone if the bag were dropped and landed with that face down. I just make sure that my phone faces the other direction, with the cameras at the other end away from the pull when I put the phone in the bag. If there are sever ID cards etc. in that zippered compartment, the risk is minimized so this is a pretty minor issue. And it's the only remotely "negative" thing I can come up with.
Overall, it's a classy way to protect a phone and organize valuables etc., and it's worth the price I paid. ($29) But I wouldn't say that it's "a steal."
I reviewed comments for three different jersey-pocket phone utility bags. I liked the features of this one best. I have used it for four months now, late December to mid-April. So, it has been through 35-85 degree heat, 2500 miles riding, and dry to very humid conditions. My iPhone 12 just fits in the bag. The outer zipper is well made. I have to use a little care when placing my phone inside to keep it away from the tab on the inner zipper. The inside is just big enough to add my tubeless tire Dynaplug Racer Pro repair tool, a small bottle of eyedrops, and a couple of electrolyte packets with the iPhone. The outer vinyl case is water resistant, wears well, and is not so slick to move around when hitting bumps.
Though this might seem a bit expensive, after having used it for a couple road trips I'd say with confidence it's top quality and more importantly a very well designed product. Even if "travel" just means a 15 minute trip from garage to a ride start, this makes it easy to organize my gear and helps avoid those D'oh! moments where you discover you're missing something. You get a gazillion padded multipurpose partitions (bottles, socks, glasses, etc.) and a few purpose-specific areas (helmet, shoes, grungy kit). It's large enough to support multi-day trips, stash small/basic tools, nutrition.
One tip if flying--depending on the airline, I wouldn't spend the $ to check this as a separate bag, but you also might not want to use it as one of your 2 carry-ons. I use a softshell bike case and am able to fit this in that along with the bike, just barely coming in under the weight limit for a regular checked bag for bike plus this kit/bag.