Cardinal Health Convertors Astound Sterile Back Gowns. Made of nonwoven, breathable Astound material, these sterile back gowns meet CPSC 16 CFR Part 1610 Standard for the flammability of clothing textiles. Extra length and extra-wide back flap provide full coverage. Full-cut raglan sleeves are tapered with long, soft cotton cuffs. Gowns offer excellent fluid repellency. Velcro neck closure for adjustable, secure fit. Gowns have inside and outside waist ties and transfer tab to aid in sterile donning.