Type-based Adult Foot Orthotics Insoles segmentation distinguishes rigid, semi-rigid, and accommodative shells. Rigid devices, usually polypropylene or carbon-fiber, deliver maximum biomechanical correction for severe pes planus or cavus, commanding ~32 % of 2023 global value because clinicians prescribe them for younger, high-activity adults despite high replacement cycle. Semi-rigid constructions blend thermoplastics with EVA cushioning; they moderate pronation for early-stage plantar fasciitis and constitute the largest share (≈44 %) by balancing efficacy with wearer tolerance. Accommodative insoles—plastazote, poron, or dual-layer memory foams—offload diabetic, arthritic, or geriatric feet; lower ASP narrows revenue contribution to ~24 %, but volumes rise as ageing populations expand. Material choice directly maps to reimbursement codes, shaping pricing corridors across North America and EU markets.