Zipfy is incredibly safe to stop simply drop your heels to slow down or come to a complete stop. Zipfy is also very maneuverable, you can steer by leaning into the side and carve down the hill. Zipfy is a lightweight, compact snow sled that makes for an exhilarating downhill ride. Zipfy is the must-have item for anyone who loves to play in the snow, engineered for all ages making it the perfect family fun sport. Feet first safety design dig heels into snow to slowdown or stopLightweight and easy to carry (3.5 lbs.)Rails on the bottom allow rider to carveOne size fits allBest for ages 5 and up but great for adults as well (250 lbs. capacity)