Grimm's Colourful Bead StairThe Grimm's 20mm Beads offers a hands on, sensory way for children to explore numbers, colours, and early math concepts. Each set includes 55 smooth wooden beads and 10 cotton strings, allowing children to thread, sort, and count as they discover patterns and quantities through touch and sight. Lovingly handcrafted in Germany from sustainably sourced maple wood, each bead is finished with a non toxic water based colour stain, highlighting Grimms