Nine interlocking EVA foam tiles that snap into a 71.5-by-24.5-in play surface, each square measuring 12.5 by 12.5 in and 0.4 in thick. That thickness is the point: the foam absorbs the impact that hard flooring sends straight into knees and joints, so a child who is crawling, tumbling, or landing hard has something forgiving underneath. Suitable from 10 months and up, and the whole set weighs 1.3 lbs, light enough for a child to help carry. Every tile carries a removable number, nine digits in total, which turns the floor into an early counting game rather than a blank pad; the numbers push out and press back in, so the same mat works as a puzzle long after the crawling stage. Three foam marker discs come along for interactive games between children and adults. The colorful print gives the space a playful look instead of the flat single tone of a plain foam pad. Cleanup is straightforward because the surface is waterproof and stain-resistant, so spilled milk or a marker line wipes off rather than soaking in, and the textured top is non-slip, which matters when energetic play turns into running. Setup takes no tools at all: the puzzle edges press together, pull apart just as easily when the layout needs to change, and the tiles stack flat for compact storage between sessions. The set complies with ASTM and CPSIA. In the box are nine foam puzzle tiles and three foam marker discs.