Montessori Infant Sensory Teaching Aids: Montessori object permanence & shape matching enlightenment toy, professionally match infant early sensory curriculum. Help babies understand object invariance principle, exercise shape cognition, visual tracking ability Premium Natural Beech Wood Safe Material: Whole set made of high-quality polished solid beech wood, smooth rounded edge without burrs and sharp corners. Environmentally friendly non-toxic paint, soft non-slip green flannel lining, durable fall-resistant structure Dual Matching Play Design: Includes round hole wool ball permanent box + rectangular hole shape disc insert tray. Two difficulty levels progressive play, exercise baby finger fine movements, hand-eye coordination, grasping placement ability, spatial shape judgment and concentration Infant Stage Ability Comprehensive Training: Perfect for 0-3 years old newborn babies, toddler early enlightenment. Effectively cultivate baby visual attention, spatial logical cognition, finger control ability, exploratory interest and independent operation habits Ideal Baby First Educational Gift: Exquisite solid wood Montessori daily life toy, easy storage and clean. Perfect newborn birthday, full moon holiday gift, essential practical teaching aids for infant Montessori sensory area