This Number Track from EDX Education is a classroom set featuring 1-20 on one side and 0-19 on the reverse side. The write-on, wipe-off feature makes the Number Track a convenient tool for teaching. Learning Skills: - Counting - Adding - Subtracting Set includes: - 15 Pieces Age: 6 Years + Item Size: (5.7(H) x 31.1(L) x 2.1(W) cm Material: Non-Toxic Plastic Warning: CHOKING HAZARD-Small parts. Not for children under 3 years EDX products are tested for compliance with EN71, ASTM and CPSIA standards. All EDX products meet the ISO 9001 accreditation requirements. EDX is committed to becoming carbon neutral through re-using, recycling and improving energy management. What's in the box 15 x Pieces