Common piece counts offered include 100, 300, 500, 1,000 and 3,000 pieces.
Listings show suggested ages from early kids through teens and adults, commonly 5 years and up, 6 years and up, 10 years and up, 11 years and up, 13 years and up, and 14 years and up.
Most are made from cardboard or puzzle board. Several listings specifically note recycled materials, for example "90% recycled paper" or "thick 100% recycled puzzle board."
Piece cuts vary: many use random interlocking cuts with every piece unique; some are die-cut into specific shapes (animal-shaped or poster-style), and some sets use extra-large or oversized pieces for easier handling.
