The soles have water drainage for smooth water removal. Made of flexible chloroprene. Shimano Lockshore Wet Boots (Water Drain/Pin Felt). Size is 25cm. I have used them for about a year and a half (approximately 50 times). There are two scratches, please check the images. I am selling these as I no longer need them. After use, I always washed and dried them thoroughly. The blue soles were used only once and have not been used since. The other soles are unused. #shimano #lockshore #wetboots