Grimm's Large Basic Building Set - Handmade Wooden Modular Blocks, 30 Pieces in 17-inch Storage Tray (4x4 Size) An oversized, heirloom-quality building set handcrafted by artisans in Germany Unvarnished blocks have a natural feel and do not easily fall apart when building Part of Grimm's "4x4" building family, this set can be added seamlessly to other large 4x4 blocks from Grimm's Vibrantly colored using certified non-toxic, water based stains; finished with food-grade oils Includes sturdy 17- inch (40 cm) square storage tray which can also serve as a base for building structures