This cushioned, grippy trail runner is designed for those who want a lot of protection on even the most rugged trails. Version 4 was updated with a slightly thicker midsole made of the lighter-weight FloatPro foam and a new Vibram Megagrip outsole for even better grip on rock. FlexConnectMerrell FLEXconnect technology supports the natural flexing of a foot in motion to enhance agility on any terrain. Anatomically-inspired, bidirectional flex grooves allow the foot to move naturally on uneven ground, providing improved ground connection and stability. FloatProShoes that come with FloatPro foam midsoles provide a lightweight ride that lasts. Merrell knows that lightweight cushioning often comes with a durability trade-off. That’s why Merrell worked with their chemists to create a foam that saves weight compared to standard EVA. This featherweight formulation cushions, protects and maintains its resiliency, potentially increasing the life of your shoes.