What age is this mat for?

It is listed from birth (0 months), so it works for tummy time and early crawling. Older toddlers can also use it as a play surface, but supervise them around the joints.

How big is the mat when assembled?

The 16 tiles interlock into a rectangular mat; the assembled size depends on how you lay them out. Check the tile dimensions before buying if floor space is tight.

Can it be used on carpet?

Yes. The foam tiles sit on carpet, though they may shift more on soft pile than on a hard floor. Interlock all edges to keep the mat together.

Wipe the foam with a damp cloth and mild soap, then dry it fully before reassembly. Avoid soaking the tiles, since water can get into the joints.

Is it safe for a baby who mouths everything?

It is a foam floor mat, not a teether. Inspect tiles regularly for cracks or loose edges and remove damaged pieces, since small foam fragments are a choking hazard.