Miniature bricks help to improve the builder's overall and fine motor skills, space awareness Enhanced exploration, enriched imagination, stimulated creativity and promoted parent-child interaction The best DIY gift, fashion, cute, cool original box function is the perfect Christmas gift, suitable as a birthday gift for friends and family Note: If you find some missing pieces in your item,please cantact the seller to show what pieces are missing,and the seller will ship the missing pieces to you. Material: ABS plastic / non-toxic Plastic material classification: ABS Net weight of building blocks:5kg Plastic building block type: small particles Product Granules: 10000PCS+ Assembly Size: 55*26*27cm Suitable for the crowd: children and adults over 14 years old, love building blocks and like challenges, parent-child interactive games, toys for the elderly to pass the time. Package Included: Building Blocks* 1