F.I.S.T. Insoles & Flex Differences:The insole is a crucial component of the flex performance of ashoe. Using Flex Insole System Technology (F.I.S.T.) insoles, Merrell customizes the flex of each insole by using different materials and configurations, so it’s just right for its intended purpose. The insoles are designed with the shoe’s specific purpose in mind- stiffer soles for more stability when carrying heavy loads through rocky terrain and more flexible soles to enhance your agility while trail running.
Q-Form® Technology: It’s a natural fact that women and men are anatomically and biomechanically different. With that in mind, Merrell specifically engineered technology, including the Q-Form® midsole, that 100% responds to the way women move. This molded midsole directs a woman’s stride and provide proper cushioning, support and corrective positioning women need to have a more balanced, natural stride that allows for longer-lasting comfort.
Air Cushion Midsole: Merrell’s patented Air Cushion midsole
offers all the compression needed to absorb up to four times the body’s
weight with a prominent heel cup keeping the foot centered for superior