Letting you get into your stride is the FloatPro Foam built into the midsole.Taking into account the environmental impact of materials, Merrell use an Ecostep rubber compound here, which has been formulated by using 30% recycled material from the outsole manufacturing process.GORE-TEX waterproof membrane, exceptional breathability and waterproof performanceEVA foam insole with 50% recycled top sheetMesh and TPU upperPadded collarProtective toe capRecycled TPU reinforcementsRemovable PU foam insole Rock plate for protectionFloatPro Foam midsole for a lightweight ride that lastsVibram Ecostep is 30% recycled rubberVibram Traction Lug100% recycled mesh lining and 100% recycled laces