Pocky are biscuit sticks covered with a flavorful coating. The original has a chocolate coating but nowadays there are many different variations. Milk, strawberry, banana and green tea are some of the flavors offered nowadays. Limited editions or regional specialty Pocky are also quite common.
You have probably seen similar products to Pocky in your country. Although originally from Japan, Pocky is currently sold in many other countries albeit under a different name.