The Black insoles feature a specialized shape to improve the fit, comfort and performance of the widest range of footwear. Category: Comfort Thickness: Thin Durable Construction: Superfeet insoles keep their shape, delivering reliable support and comfort for up to 12 months or 500 miles, whichever comes first Superfeet Shape: The low-profile shape helps stabilize and support the foot, which can help reduce stress on feet, ankles and knees Your Purchase Makes A Difference: Every year, 1% of Superfeet sales and 1,000+ volunteer hours go to support organizations working to shape strong foundations for a healthy future. Heel Cup: Features the most accommodating heel cup and can help stabilize and support the foot High-Density Foam: Closed-cell foam supports and cushions the foot for long lasting comfort. Organic, Odor-Control Coating: All natural coating that eliminates odor-causing bacteria Stabilizer Cap: The reinforced rearfoot of the cap provides structure and support for our most flexible, low-volume insole