The material used to hold the shoes seems doubtful it will last. My order came about 3 weeks ago. However, I could add a third set for those long Ultra events, like the Western States 100, and forego recharging one set when I swap out at 8 hours! The first thing I have to tell you is it took about half hour of fruitless research and attempts to even get it to pair with my Macbook Pro, and if you want to skip those headaches I can tell you kind of what I did. Me personally I like to wear socks and with these it helps with the massage soles that actually massage your feet. Way more sound. She is 2 years old and puts them on all the time. No LED indications, no welcome voice. RECOMMENDATION:Based on the above visual observations and physical testing, I conclude that Yokersu products offers value for money, quality non-OEM cables and wall chargers. The batteries are easy to install and don?t fall out like my old ones since the door is on the outside now.