56% Cotton, 37% Polyester, 4% Nylon, 3% Lycra Thirty48 Women??s Premium Socks are truly ??No Show?. Socks are perfect fit for majority of shoes types (TOMs, flats, sneakers, loafers, etc) SILICON GRIP ON HEEL – Prevents slipping throughout the day from walking, running CONTRASTING COLOR ELASTIC CUFF – Adds style and keeps the fit comfortably snug PREMIUM MATERIAL FOR COMFORT WEAR ? Soft Cotton for comfortable wear experiences on daily basis 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 No Show Socks.