Cascade 220 Superwash Wave 220 Superwash® Wave is our classic 220 Superwash® with a new color shift effect. The color repeats are very long (full transition is around 1,000 yards) with some high contrast and some tonal colorways. It is still a natural fiber that is easy-care meaning you can machine wash and dry it! It’s great for all ages, and comes in a wide array of colors. From accessories and kids items to blankets and quick knits, this is the perfect yarn!