Merrell Synthesis Flex Trainers Mens. Merrell Synthesis Flex Trainers MensThese Merrell Synthesis Flex Trainers are crafted with lace fastening and a padded ankle collar for a secure fit. They feature a cushioned insole for comfort and moulded sole for grip. These trainers are designed with a signature logo and are complete with Merrell branding.> Trainers> Lace fastening> Padded ankle collar> Cushioned insole> Moulded grip sole> Signature logo> Merrell branding