Ellie Shoes - 557-Cosmic, 5.5" Heel Knee Boot for Superhero or Wonder Woman Halloween Costume in 3 Colors 557-Cosmic, 5.5" Heel Knee Boot for Superhero or Wonder Woman Halloween Costume in 3 Colors, by Ellie Shoes By Ellie Shoes. The letter "M" in the sizing designates "Medium Width" Shipped via USPS Priority Mail (2-3 day) or USPS Express Mail (1-2 day with signature required). All International shipments sent USPS Express Mail when available. Women's Sizes 5-12 (US)