We recommend this insole to people high arches that want an insole with extra insulation. This insole has a merino wool topsheet that will help keep the foot temperature regulated in colder weather. In a properly fit pair of Superfeet the heel will sit comfortably in the cup and the arch of the foot will extend evenly towards the front without spilling over the edges. Superfeet Merino Grey come in unisex sizing. We offer in-store fitting for these during regular business hours.