Each piece of brick has been carefully cut polished and after much anti-swallowing test the wood is the original color of the log without adding any chemical paint to give the baby a safe and healthy guarantee. Each building block is smooth and thornless and the touch is smooth and not tied. It cares for the baby's delicate skin and is suitable for the baby's small hand.Best toy to keep your kids busy for hours of play and fun time Keep your kids happy and build their self confidence at the same time Manufacturered by LS. Be creative with imaginative hands-on play to build anything you can imagine Great toy to help you kid develop a set of skills in match and common sense We design log wood for 1-6 year olds and choose a variety of log wood from many countries such as: beecheucalyptus birch maple etc. will not crack will not decay no mites no Odor.