I used these for about two months at the beginning of winter! They still have good grip and are usable, but I no longer need them as I bought a new pair. They're great when you want to go fast but don't need spikes, and they're simply light, so I recommend them. Most Nike-sponsored athletes wear these. They are still usable, but please purchase only if you understand the condition of the product to avoid any issues. - Brand: Nike - Model: ZoomX - Color: White/Navy - Material: Mesh - Features: Lightweight Thank you for looking.