A modern, feminine update to our classic Bluefish style. The Koifish in linen oat adds sophisticated style to your wardrobe. Made with a leather and textile upper, this boat shoe also features an EVA molded midsole fior superior comfort and support during your daily routine. Koifish is the modern, feminine update to our classic Bluefish style. Non-Marking Rubber Outsole. EVA molded midsole provides support and comfort. Leather and Textile Upper. Adjustable 360? lacing system ensures a secure fit.