Trigenic Flex mens black nubuck leather boots ? these mens leather lace up mens-boots have a contemporary all over pattern and leather strap detail on back. Trigenic Flex mix contemporary style and comfort. Clarks Ortholite technology provides long lasting cushion comfort as well as wicking away moisture, odour and fungus for all day comfort. These fashionable shoes will look perfect on many occasions including a relaxed evening out with friends.