Overall, this is a good buy, and I 10/10 recommend getting one. I can’t express how satisfied I am with purchasing these shoes. Look somewhere else if you want bass. I havent had any audio problems such as drop-outs or popping. Always have great traction. I use the shoes to play tennis. I like the heavy duty-thick sole, allows me to scramble over rock terrain without pain. I’m usually a 7, but I needed a 6 in these, and the 7 fit my friend who is a size 8. Sole started separating after 2 months of wear and neither the seller nor Birkenstock will do anything about it. It feels durable and good quality, I would recommend this.