Otulet Loz London Bridge British Tower Bridge 570pcs Micro Blocks Small Building Block Set Micro Assembled Blocks, Parent-Child Games Building Blocks Children's Educational Toys - Series of Famous Building Great value, an alternative to large, expensive building sets! Great level of detail! The perfect gift for a budding builder or collector! Loz micro-sized building blocks help enhance budding builders' gross and fine motor skills, spatial awareness, and storytelling capabilities Made from high-quality durable non-toxic green material, Loz micro blocks are flexible and won't damage easily. Their smooth surface and rounded corners are designed to make them kid-safe