To encourage our citizens to participate in positive leisure activities that help keep them fit, this Post is once again issuing a set of four outdoor activities stamps, featuring "Speed Walking," "Cycling," "Skateboarding" and "Inline Skating." The designs follow:(1) Speed Walking (NT$5.00): Speed walking is walking with a longer stride and faster pace. It is suitable to all age groups, can be done anytime and anywhere. There is little risk of injury. It is a form of exercise that is convenient and affordable. (2) Cycling (NT$5.00): Cycling is suited to all age groups, and is environmental and fashionable. Bike paths have been built across the nation. A combination of exercise and leisure, cycling is very popular. (3) Skateboarding (NT$12.00): Skateboarding is a sport popular among young people, for it requires speed, technique and a willingness to challenge oneself. The cool designs of the boards also appeal to youth. (4) Inline Skating (NT$25.00): It is called an inline skate because the wheels are arranged in a single line. Inline skating is a challenging sport, and is great at enhancing the skater’s sense of balance and coordination. It is a cool sport in the eyes of teens.