Spenco Polysorb Heavy Dty 10/11-11/12. Specifications for Spenco Polysorb Heavy Duty: Manufacturer: Spenco Men's Shoe Size: 10 - 11 US Women's Shoe Size: 11 - 12 US Gender: Unisex Age Group: Adults Color: Green Padding: Yes Water Resistance Level: Waterproof Fabric/Material: SpenCore Material PU Shock Absorption: Yes Odor Control/Anti Bacterial: Yes Footwear Accessory Type: Insoles Package Contents: Spenco Polysorb Heavy Duty The Spenco Polysorb Heavy Duty is a quality addition to the Spenco lineup. For more great deals on Insoles by Spenco please browse our Spenco Footwear page.