Thank you for viewing. Hydro Tech 2 Fin Soft Can be used for speed training and power training. I've been wearing them for about 3-4 years. They're neither too hard nor too soft, just right. There's a little dirt, but I don't think it'll be a problem for training. - Color: Pink - Size: 6-7 (S size) 22.5-24.5 cm Retail price: 8800 yen Only those who understand are welcome to purchase.