Develop early math skills by weaving these buttons onto the laces provided. Great for fine motor development, sequencing activities and encouraging creativity. The set includes large plastic buttons with four lacing strings. There are 0. 5 lb. , or approximately 60, buttons in 10 colors: yellow, dark blue, light blue, pink, purple, red, orange, green, black and white. Activity guide included. Size: 1. 5"-2"W.