Rainbow( yellow) just screams happiness and joy! It must be the bright yellow Merino wool! This is super sunshine-y yellow and rainbow sprinkled yarn plied as one! Rainbow(yellow) weighs 2.8 ounces and is a vibrant 87 yards for your crafting pleasure! You can see how the colors flow in the photos. This would be perfect for anyone who loves wool to work with! Rainbow (yellow) is 100% merino. Gentle hand washing in cold water with wool wash is advised to prevent any felting, shrinking or fading.