Sturdy flat-topped plastic stones with adjustable rope to alter the jumping distance, changing the difficulty of the jump. Each stone has a pimpled platform top to help prevent slipping. Children will gain confidence and improve balance as they progress from stepping on each stone over short gaps to jumping over longer gaps. Made from strong polypropylene. Stones can support an adult's weight. Extra sets may be added to form longer trails. Size: platform top 23cm diameter, base 32cm diameter, 13cm high. Includes 6 stones with ropes in one set.