5’5” Bio-Mini. I call this model the Bio-Mini because of the materials. It is made with a recyclable eps foam core. The glassing is done with Entropy super sap epoxy resin. This resin uses organic material from byproducts from trees and plants used in other products. This material replaces some of the harsh chemicals used in regular epoxy. Please learn more at Entropy Resin http://www.entropyresins.com/. The combination of eps foam and Entropy resin creates a light, fast responsive board. The fins, I made from paulownia off cuts. These fins are light and work well.