Introducing the Swift from the NASA Posters: Telescopes Collection! Swift is a turquoise tonal. All yarn is hand dyed in small batches. Tonals yarns may have small deviations between skeins, as expected from hand dyed yarn. Each set of 4 is dyed in the same pan to ensure consistency. This listing is for a set of 4, individually labeled, skeins in Pacific Worsted - 4 ply, Superwash Merino, 218 yd/100 g each. This yarn is #4 Medium weight. The worsted weight is the bottom right in the picture. Yarn is sold in sets of 4 due to dye pan limitation. All yarn is dyed to order and is added into the dye schedule once accepted. The initial quoted time is to account for a heavy schedule. Once ordered the ship date will be updated based on the current dye schedule.