100% Polyester Mettler Polysheen. They have a lovely shine to them. Pack of 3 assorted blue threads, with 200 metres on each reel. Each pack is not identical to the variety of threads in the photo, they are very close though. These threads are usually priced at $5.50 each, now reduced down to $3.50 each - we have this pack of 3 for only $10.50!