Suitability 7700 Horses Fly Mask Equestrian Sewing Pattern Suitability Sewing Pattern - Sold by the Pattern #7700: This pattern includes five sizes of fly masks, with and without ears. The size range should fit from a foal up to a warmblood. The masks have fleece edging and are fastened with hook-and-loop tape. Sizes XS-XL Combine other Supplies or Fabrics from our store for shipping discount.