These versatile building blocks are perfect for creative construction. Made from ABS plastic, these 5"x5" square bricks can be snapped together easily to build anything the imagination desires. They are compatible with standard building bricks for limitless play. Whether stacking towers high or crafting ground-level structures, hours of entertainment are ensured. Suitable for ages 15 and up, these bricks provide cognitive and dexterity benefits while fostering problem-solving skills. Their classic black color allows blending with other themes. With 2 basepanels and 1000pcs multi-color included, there is enough material to get started on the first of many masterpieces. Clean-up is simple - just dismantle the design when complete. Recommended for creative teens and kid-at-heart adults alike.