Thirty48 Running Socks for Men and Women by Features Coolmax Fabric That Keeps Feet Cool & Dry - 1 Pair, 3 Pair, or 6 Pair 30% nylon COOLMAX FABRIC: Designed to Move Moisture Away From the Body, Keeping Your Feet Cool and Dry, While the Patent-Pending CatalystAF Design Creates Airflow Within The Fabric, an Air Flow that Enables Your Skin to Breathe THIRTY48 IS THE MANUFACTURER - You can buy with confidence knowing that your purchase is directly from THIRTY48 Corp. Our customer service team is available 24/7 and there is no third party department you have to deal with since you are buying direct from Manufacturer. Thirty48 will NOT be responsible for any purchase made from other sellers as they are NOT selling the real Thirty48 Running Socks.