Very easy to assemble, we have an 8 month old and the mats are perfect for covering up our hard wood and cement floors as he's learning to walk

Using in our playroom as a buffer from the hard wood floor

We use these on a carpeted floor and hard wood they move a bit when working

I bought this to put in my mini Aussie’s gated play area to add some padding to our hard wood floors

As you interlock the pieces to occupy a large area you will have more than enough of the edge pieces - but you might need to cut the longer pieces into the shorter ones)I laid it on top of hard wood floor so it slips a bit - I have put pieces of furniture to hold it in place