Our untreated wool puddle pads use wool which is woven into water resistant fabric. This pad naturally resists liquids to protect your mattress. No polyurethane or other synthetic backing is put on our wool. Our puddle pads are not quite as soft as our Wool Moisture pads but the price is a bit better. Both pads are from the United States, made by us. The wool puddle pad is made of wool from New Zealand, while the wool moisture pad is made of wool from the USA. Adult sizes have elastic straps and all are machine hand wash cycle or delicate cycle or hand wash only since we oversize ours to allow for the shrinkage; hang dry – not in direct sunlight.