i bought from there and its been fine with my boys, although never thought to double it up to make it thicker! mallethead
I have 4 boys, 2 above the others and i ordered 3 sheets for x2 4x2 pens and had lots left over. The top two have chewed it badly, i've had it about 5 months and I'm going to replace theirs in the new year and buy a cage liner to stop them doing it, i currently clip the fleece to it and they still get around it pow-pow
The downstairs pair dont chew at all though and theirs is fine!
The delivery was fast, next day, it came in a huge tube shape and i had it delivered to work and it only just fit in my tiny car lol! :{