• Polypropylene.
• Keeps Feet Warm and Dry.
• Sold in pairs.
• One Size Fits most.
• Made In USA.
• Army Issue.
• Black GI polypropylene sock liner pair.
• Worn under socks.
• GSA Compliant.
• Key features: Water repellent, moisture wicking, very breathable, quick drying, outstanding warmth to weight ration..