12 mm for children aged 2 - 6 years. It is produced using MDF Lam material. IF YOUR CHILD IS UNDER 24 MONTHS, YOU MUST TAKE EXTRA SAFETY MEASURES FOR THE BACK PART. THE PRODUCT IS DESIGNED AND MANUFACTURED FOR USE BY 2 - 6 YEARS OLD. The wood used is of E1 standard. The box content includes 1 learning tower. It is designed to be gradual and adjustable in step height. Steps can be installed according to age group. There are anti-slip bands on the step tables. Your child can easily step on it. It has antibacterial, antiallergic and non-slip properties. The products are unpainted. No chemical substance was used. It has no harm to health. All edges are rounded and there is no sharp edge. Shipment is provided with an easy installation assembly diagram. Dimensions: width 40 x depth 50 x height 90 cm.' is. It is disassembled - installation belongs to the customer. * There is a design registration. Registration Number: 2021/00898