Maxi markers. Set of 48. Turbo-powered creativity at school with Giotto Turbo Maxi! Easy to hold, giant-format Giotto Turbo Maxi pens have an extra-large5 mm tip for turbo-powered drawings! They are perfect for school! The anti-retraction fibre tip is extra tough and long-lasting, and the inks are completely safe and easily washable from hands or fabrics. They also offer maxi protection, with a ventilated safety cap.