It lack bass so it makes the sound look likes its from cheap headphones. They are soooo good. I slipped my feet in and they are flexible yet sturdy. To others this is freaking amazing. In the same price range the JBL is far far superior in sound and build quality. If you have narrow or medium width foot then you should probably order 1/2 size down but if you have a wide foot than order your true size. Queda perfecto. As my first pair, I wasnt aware of how the sizes work. Anyway, it did give me my adrenaline rush for the day. But all in all, I feel safer wearing these sturdy sandals.