Outdoor Play Bobbins. Try walking on these wooden walking blocks with a rounded bottom! Or turn the bobbins over and walk on the flat side, but put your shoe on the curve. What is the easiest way for you to walk? Contents: 2 wooden spools with rope. Dimensions: 12 x 6 x 7 cm. Supplied in full-colour box with extensive manual. Suitable for children from 4 years.