• [Patent]: The patent of cube blocks is valid within 25 years and open to all now
• [Bible story]: Goliath, the Giant (1 Samuel 17: 4-10)
• [Product size]: 3.14 x 4.56 x 5.27 inch / 8 x 11.6 x 13.4 cm ; number of pieces: 515pcs ; the bricks as small as 4 x 5 mm
• [Safety]: We care about safety as much as parents do! Our bricks obtain the safety cert, ASTM/CE/EN71; high-quality bricks made of ABS for dimensional stability over many years
• [Easy to Build]: We included clear instructions, you can follow instructions step by step, for ages 10 ; if any parts missing, please kindly contact our Multi-Blocks CS team