This is a great set of 1-20 Lacing Snakes is ideal for practicing numbers 1-20 whilst developing your fine motor skills. Children create their own snake by lacing the body parts onto the string. The body parts have numbers 1-20 on the top for easy number recognition. Includes 5 heads (40 x 45 x 20mm) 20 body parts numbered 1-20 (30 x 30 x 20mm) and 5 laces.Warning: Choking Hazard due to small parts and strangulation hazard due to long cords: not suitable for children under 3 years old.