These Giotto Turbo Colour Felt Tip Pen Sets contain pens with intense and vibrant colours. They contain harmless, washable ink so are ideal for promoting motor skills in children (over 3 years). Giotto Turbo Colour Felt Tip Pens have fine, durable and extremely resistant and pressure-resistant tips. Thanks to their ventilated safety caps these felt-tip pens are 100% safe. Each pen is 14.5cm long with 2.8mm diameter tips.