Description: Made of high quality environmental friendly wooden materials, there is no burr on the edge. Durable and lightweight, letter matching toys endures many years of use for children. non-toxic and safe for kids. Follow the words in the card and use small blocks to spell out the words, learn while playing to increase childrens learning enthusiasm. Can help your kids observation, matching and memory skills, good ways to teach children alphabet, language, and spelling literacy skills. Perfect children's early education cognitive toys, age for 4 years up kids. Specification: Material: Wooden Size Chart: Base Frame: 14.5x3.5x18cm / 5.71x1.38x7.09inch Card: 8.8x7.8cm / 3.46x3.07inch Building Blocks: 3x3x2.2cm / 1.18x1.18x0.87inch String Frame: 20.3x2.3cm / 7.99x0.91inch Card Frame: 9x2x1.3cm / 3.54x0.79x0.51inch Package Includes: 50 Pieces Learning Cards 16 Pieces Building Blocks 1 Piece Base Frame 1 Piece String Frame 1 Piece Card Frame Note: The color may be different for different display, pls understand Pls allow 1-3mm error due to manual measurement.