The length and durability of this is great!I love these charges but after a while they start to have the average wear and tear. They work like a champ when it comes to charging, i don't have to wait forever for my phone to charge anymore.Quality cable !!!*Update* I purchased these in November, 2019. It is now mid March, 2020. I still love these charger cables. One is stationed at home, one is in my truck, and one travels with me. I use all three of them regularly and they are all in great condition still. I am purchasing another set now for backup and more availability of each cable length. For me, the metal spring is a game changer.I go through chargers quicker than I would like. I take all the steps to care for them. I've accepted my relationship with charging cables. I use the USB C cable for my Samsung Galaxy Note 9. I've only had these cables (3ft, 6ft, 10ft black) for about a week but I already like them better than any others I've used. They have a metal spring around the cord where it meets the USB which was my selling point. They charge really quickly which is nice. I'm still not very hopeful about them lasting but I don't blame the product. Anyway, I like them and I will probably get a few more for backup. Maybe I'll come back and update my review in a month or two.Perfect for the price!I use it to charge 2 different Apple devices (iPad Pro, iPhone 13) plus my camera.Update : customer service was very friendly and sent me a new set! Hoping these work out better!A few months in and the 2 longest cords have stopped working!(I used one until it stopped, and then used the other one and its now not working)I had high hopes as the build and material seemed promising,But REGULAR USE breaks these very quickly!My cell phone cords get used and abused. They crack, frazzled, come apart, and get loose at the phone connection. 6' and over cords I've used drop voltage and don't charge fast. These cords don't do any of that. They are heavy duty. The long ones hold the charge rate. The long, long one is comfortable to use on a couch or in bed or on a car dash. High value.It's like some people are complaining about the cable not charging fast enough, when it said in the description on certain cellphones it won't. They failed to read everything on what it said.This item is great and shouldn't have low ratings as it's required to have high ratings. I have no problems with mine, no matter how long it takes to charge. It's well built and it's doing what it's supposed to do. ???Haven't had them very long, but they seem to be of high quality.