Three-quarter length replacement arch support insole with a thin profile for dress or casual shoes and boots which provides complete heel-to-toe comfort. Helps support arches, improves gait, balance and stability. Increase wear-time daily as you adapt to a new level of support. Best for flat, low or fallen arches, the SpenCore cushioning layer absorbs shock and impact. Thin orthotic shell provides stability without the added bulk of most orthotics. Firm adjustable arch support allows for greater arch support when heated and molded to individual preferences.