M/L knit socks are made from a blend of 70% Cotton, 28% Polyester, and 2% Spandex. These socks fit 9-13 US Women | 39-43 UK Women and 8-12 US Men | 41-45 UK Men. The ankle, heel & toe are black, whereas the center portion is blue with happy and celebratory dancing black, white, and red cups & ping pong balls neatly spread in a repetitive pattern surrounding the ankle and the top portion of the foot. The sole of each sock features a different sentiment "I Sink It You Drink It" and "Beer Pong Champion" in an all-caps white sans serif font. Machine wash cold on a gentle cycle with like colors and mild detergent, do not bleach. Tumble dry low, or lay flat to dry, do not iron. They are packaged in a polybag with a hangable cardboard header.