I think this company has gone out of business. So these are pretty hard to find. I really liked using them between the cotton absorbent layer and a wool cover. Two of them seem to be thicker maybe three layers of wool and two a little thinner – – I’d guess two layers of wool. some of them are a little more shrunken. They range from 11 1/2 inches to 12 1/2 inches long and are all about 4 1/2 half inches wide. Hands washed in eucalan. Some staining as pictured.