Magz Bricks 45 is a magnetic wooden building set containing 25 blocks with 2 magnets, 15 blocks with 3 magnets and 5 magnetic riser. Wooden blocks come in 5 colors. Magnets are strong and what you build will be stable. This product is packaged nicely as a gift to a child. It has a storage bag and an instructions sheet. Wooden Bricks 45 is an open end magnetic building set perfect for toddlers and younger kids. However any age or gender can have fun building with it. Short blocks measure 2.3" x 0.8" x 0.6". Long blocks measure 3.8" x 0.8" x 0.6" and the risers measure 0.8" in diameter and 1.8" in height.