Anatomical insole

The insole is the internal piece of footwear that makes direct contact with the sole of the foot. It can be fixed (integral part of the footwear) or removable (replaceable by the user). Quality insoles are determinant components of perceived comfort — a shoe with excellent upper and sole can have its perception destroyed by a bad insole.

Anatomical insoles use PU foam molded in specific geometry that follows foot anatomy — with raised plantar arch, concave heel and softened forefoot. The manufacturing process is typically direct molding (foam injected in a mold with the final shape) or lamination (foam block cutting + technical fabric covering).

Main types include: HR flexible foam insoles (balance between comfort and support, more durable); viscoelastic or memory foam insoles (conforming to foot shape, pressure relief, more popular in comfort and orthopedic footwear); dual-density insoles (upper viscoelastic layer, lower HR structural layer); insoles with additives (activated carbon, antimicrobial copper, graphite for thermal conduction).