Womens Backcountry Canvas Billy Goat Shorts 10 - Khaki. The Backcountry Billy Goat Canvas Short is a throwback to one of the original Royal Robbins pieces, and now it's more sustainable than ever with organic cotton. Our favorite women's hiking short has stood the test of time. The ultra-durable, 100% organic cotton Billy Goat Canvas has UPF 50+ protection and a vintage, lived-in look and feel. With versatile pockets and a double layer seat for added durability, this classic brings superior performance and comfort.