Material: 100% Calfskin
Knots - Petzl USA
Surgeon's knot
Learn How to Tie a Poacher's Knot
Diamond Knot Tutorial
10 essential knots you ought to know! - Hammock Universe Canada
Palomar Knot
How to Tie a Bowline Knot
How to Tie a Tie 7 Easy Tie Knots for Any Occasion
How To Tie A Full / Double Windsor Knot & What Not To Do