Check the listing for details. Equinox Bilby Ultralight Durable Ripstop Nylon Stuff Sack - Compact, Waterproof. Condition: New with tags. Listed at 31.69 USD. The Equinox Bilby Ultralight Stuff Bags are the perfect solution for keeping your gear organized and protected on your outdoor adventures. These ultralight stuff bags are tough enough to withstand the rigors of the trail, yet lightweight enough to not add unnecessary bulk to your pack.Measuring 10x21 inches, these black sacks are the ideal size for stashing clothing, accessories, or other essentials. Made from durable materials, these stuff bags will keep your gear dry and secure, even in the most challenging conditions.Whether you're on a multi-day backpacking trip or a quick day hike, the Equinox Bilby Ultralight Stuff Bags are an essential addition to your gear arsenal. Stay organized and keep your gear safe with these reliable and versatile stuff bags.1. Say goodbye to bulky bags with.