Cotton, crew length, one size fits all, individual poly bag with hanger and UPC code, machine washable. If you are in the healthcare field, you know that there is always that one nurse who is an expert at starting an IV- a "Vein Whisperer". If you’re the best at starting IV’s and don’t need to poke your patients a million times, then let the world know it with these super cute “Vein Whisperer” socks! These funny socks are a great way to tout your skills!