InvisaFil Mini Color Set, Must Have Mediums. Ultra-fine 100wt InvisaFil™ thread by WonderFil, now available in sets of six coordinated 400 meter spools (approximately 437 yards). The six exciting color selections in this set are by professional quilt-artist, designer, instructor and author, Vikki Pignatelli: Pure Orange-711, Cinnamon-722, Aqua-713, Lilac-714, Dusty Rose-717 and Copper-719. These Mini Packs are the perfect choice for anyone who needs a variety of colors without the need to purchase larger spools, or a great way for those who want to sample InvisaFil for the first time.