Amazon カスタマー 3 They work and they aren't expensive.They are a little difficult to take on and off (not a huge problem), and they are really hot to wear for a long time.If you are only using these on pavement / asphalt, and rough concrete no problem. On many other wet surfaces though they are like walking on a soapy slip 'n slide, or like walking on a wet and soapy marble floor (dangerous).