No BurrThe toys are carefully polished and free of burrs which will not hurt the children's hands. High Quality MaterialMade of high quality material which is non-toxic eco-friendly and safe to use. Manufacturered by Tnfeeon. MaterialMade of safe and environmentally friendly plastic ; children under 3 years old are not suitable for use. Easy to PlayEasy to assemble and brightly colored blocks giving kids a fun way to play and learn new skills and broaden their knowledge at the same time. DIY AccessoriesYour kid can use the accessory to DIY his own toy which can stimulate your child's creativity.