Multi-coloured wax-based crayons They are protected by a durable plastic tube with a twist-up mechanism to prevent breakage and waste. They do not dry out, are non-toxic, acid free and odourless. Each pack contains six assorted colours. Ideal for office, home and school where they can be used for brightening up pictures, posters, birthday cards, and invitations. Perfect for children’s drawings and art work. Size: 6 x wax crayons