ENO - Eagles Nest Outfitters Ridgeline with Prusik Knots COMPATIBLE WITH YOUR ENO: This replacement, complete with 6 versatile prusik knots, is compatible with any ENO Hammock, Rain Tarp, accessory, and can be used as a campsite accessory. EASY TO USE: Setup and take down in seconds STURDY CONSTRUCTION: Made of durable nylon. SMALL AND PORTABLE: 20 inches long, but only 1 ounce DURABLE PRUSIK KNOTS: 20 inch line with 6 durable prusik knots.