Orthotic apparatus; Orthotic devices; Orthotic insoles; Orthopaedic insoles; Orthopaedic shoe insoles; Insoles for corrective treatment of conditions of the feet; Pads for shoes (orthopaedic); Apparatus for the corrective treatment of conditions of the feet; Supports for flat feet; Inner soles (orthopaedic) for footwear; Articles of footwear (orthopaedic); Orthopaedic footwear; Toe inserts for footwear (orthopaedic); Arch supports for footwear; Sheet materials for use as insoles in footwear for the corrective treatment of the feet; Sheet materials for use as insoles in footwear for the corrective treatment of the lower limbs