This Two-Piece Trapezoid set is perfect for Pre-K through elementary-age students as it is designed to challenge them. Each piece is designed using high-quality foam cores and coated with durable 18-oz vinyl, making it strong and capable of withstanding the most vigorous use. It's stackable construction provides an exciting climbing experience, with a sturdy hook fastener on the bottom for use with Carpet-Bonded Foam. Available in solid vinyl or exclusive Adventure Rock DigiPrint.