New, unused MERRELL HYDRO NEXT GEN MOC Size: 27cm, with box Purchased at a MERRELL directly managed store. Selling because the size was a little off. Tried on only. This is a very popular model from MERRELL with the concept of "Water Flowing over Rocks." The "HYDRO NEXT GEN MOC" features a sustainable material called "BLOOM" foam, made from algae biomass, for the upper material. The newly improved heel structure allows for smooth on and off. Furthermore, the highly cushioned "FLOATMAX" foam midsole enhances comfort. The outsole is equipped with a rubber sole that improves traction and durability, creating an all-terrain "HYDRO MOC." The concept of the evolved "HYDRO NEXT GEN" series' upper form is inspired by "Water Flowing over Rocks." ■ BLOOM A plant-derived EVA foam material blended with 10% algae biomass. Due to recent global warming, the proliferation of algae in lakes has become a problem, affecting aquatic ecosystems. To address this, algae biomass collected during water purification is converted into chips and blended into EVA, creating a highly flexible foam material. This process returns purified water to algae habitats and reduces CO2 emissions by using it as a substitute for petroleum-derived materials. ■ FLOATMAX Foam Midsole A sustainable EVA foam that excels in cushioning and rebound elasticity, balancing lightness and durability (functional longevity). Compared to the foam used in many MERRELL performance shoes, this foam is even softer and offers improved cushioning. To reduce environmental impact, it is manufactured using a "zero-waste production process" and uses TPE (thermoplastic elastomer) material, which is easier to recycle, as its raw material. ■ Merrell Sticky Rubber Outsole MERRELL's proprietary sticky rubber provides excellent grip and durability in various environments. ■ Vegan Friendly Products that do not use animal-derived raw materials.