MENSA is an international high-IQ society, with membership limited to the top 2% of the population. This is a set of sticky notes sold by JAPAN MENSA, the Japanese branch of the organization. Normally, only MENSA members can purchase these, and they are sold only at an annual event, making them very difficult to obtain. While the outer packaging shows some signs of wear due to amateur storage, the contents are in excellent, unused condition. Please consider this before purchasing. Please refer to the third image for the size and number of sticky notes. It appears there are 20 sheets of each color.