Used, with signs of wear Soshin RBB Rivalley Felt spike with tungsten pins Size: LL (27.5cm) The felt shows the base material at both the toes and heels. There are gaps on both shoes at the outer sides of the toes due to adhesive peeling. You can probably have the felt replaced at your local fishing tackle shop, but I think it cost around 7,000 to 9,000 yen. Because of the tungsten pins, it feels like more than 70% of the pins remain. The pins grip firmly, so I don't know about rock shores [as I have no experience], but they work perfectly fine on tetrapods. After washing with shoe detergent, they will be dried in the sun and deodorized and dehumidified with wood chips before shipping. They are quite expensive when purchased new, so they are good for beginners.