The Spenco PolySorb Heavy Duty insole is a full‑length shoe insert engineered to deliver maximum cushioning, shock absorption, and all‑day comfort — especially useful for people who stand, walk, or work on hard surfaces for long periods. It replaces standard insoles to restore comfort, reduce fatigue, and support foot health.

Key Features:

Heel‑to‑toe cushioning and shock absorption — The insole uses SpenCore material plus PolySorb polyurethane foam to cushion impact with each step and reduce stress on feet, legs, and joints.
Maximum comfort for prolonged standing or walking — Designed to fight fatigue and support comfort when you’re on your feet for many hours, such as work boots, daily wear, or long walks.
Medium‑arch support & heel/forefoot impact zones — Helps stabilize the foot, support arches, and distribute pressure to relieve pain, arch strain, or over‑pronation.
“First‑Ray Drop Zone” & Forefoot Crash Pad zones — Features designed to promote efficient toe‑off and reduce forefoot pressure during stride for healthier foot mechanics.
Low‑friction top cloth with antimicrobial treatment — The surface reduces internal friction (reducing blister risk) and helps control odor for longer-lasting freshness.
Full‑length, trim‑to‑fit design — Easy to trim to match your shoe’s original insole shape for a precise fit in many types of footwear: boots, sneakers, work shoes, dress shoes, athletic shoes.
Versatile use — Suitable for work boots, hiking or outdoor footwear, everyday shoes, or athletic shoes — helpful for activities involving walking, standing, or heavy impact.