Mohawk Home 10' x 14' 3/8 Rug Pad 100% Felt Protective Cushion, Premium Comfort Underfoot – Safe for All Floors

This came in one piece and was square (some reviews mention underpads this size arriving in 2 pieces and not being totally square). It adds a nice softness to our area rug. It was exactly the size indicated & I had to trim a bit on two sides so it wasn't exactly the same size as our 10x14' area rug (I didn't want it to show on the edges) and it was very difficult to do, but that's because it's so dense, which is a good thing. I didn't notice any unusual smell and I'm very happy with the purchase.

Misleading images

We have a tile floor, and a 10x14 handmade wool rug. Putting this under the rug made it feel so much better. It was rather difficult to cut with scissors, I switch to a utility knife and that worked fine.

Extremely inconsistent thickness. 1/2 in to 1/8th in different sides.

Just the right thickness to add comfort under the area rug. Great for hardwood floors. A little thought to trim, otherwise it would have been five stars.