Yellow Door Natural Threading Frames *Product Description: Made from sustainably sourced birch plywood, the three lightweight wooden frames in this set are easy to manipulate as children explore threading the holes with lacing materials, such as laces, wool, string and types of ribbon, to create colourful compositions. Such enjoyable activities are excellent for helping children to develop hand eye coordination, dexterity and concentration skills. External frame diameters: 210mm, 140mm