This 20-piece set includes a character piece ? a child in a frog onesie, with a hat that can be swapped for a seal one. The set makes a variety of different mini houses using the magnetic window square, four standard squares, two triangles, a sector and two arches, while extra accessories include three floor inserts, two windows, a chair, picture and a slide. And, because it?s compatible with all other Magformers sets, it makes a fantastic addition to any existing collection. Made from a supertough ABS plastic and strong, highest-grade neodymium magnets, Magformers are proven to inspire children's creativity and assist their 3D brain development through construction play - opening up a world of STEM play through the building of flat 2D nets and their corresponding 3D geometric models such as cubes and tetrahedrons ? even a 26-sided ball (aka rhombicuboctahedron). And, of course, they?re simply great fun to play with whatever your child makes. Every Magformers magnetic shape features the unique Rotating Magnets System (RMS) ? strong barrel magnets safely sealed inside the edges which rotate, so they always connect to each other. This makes the toy incredibly versatile and creative, offering children six different methods to build their 3D creations. Features: Contains 10 magnetic Magformers pieces, plus 10 accessories to make mini worlds for the little frog character. Special ?glazed? window Magformers piece adds a new dimension to builds. Includes A3-size leaflet showing what 3D construction models can be made. Magformers are tested and approved in quality and safety standards all over the world. A widely recognised and accredited STEM toy, exploring magnets and forces, geometry and maths learning.