Women, wearing nylon masks, rest on the shore during their visit to a beach in Qingdao, Shandong province July 6, 2012. The mask, which was invented by a woman about seven years ago, is used to block the sun's rays. The mask is under mass production and is on sale at local swimwear stores. [Photo/Agencies]

Women, wearing nylon masks, swim in the water during their visit to a beach in Qingdao, Shandong province July 6, 2012. The mask, which was invented by a woman about seven years ago, is used to block the sun's rays. The mask is under mass production and is on sale at local swimwear stores.[Photo/Agencies]