Made from original eco-friendly plastic ABS material, wire-drawing metal effects stickers. Improved anti-pop technology and structure, fast and smooth turning. Playing speed cubes develop and exercise kids intelligence and operational ability. Unequal silver mirror cube and Irregular dysmorphism Wind mirror cube set bring you unusual feeling. Wonderful gift for all ages. Add your company logo, name or advertising information to make an impressive show at conferences, conventions or other marketing opportunities.