A water knot joins two flat straps together with two double overhand knots. The water knot is most often used to tie tape, leather, or other kinds of flat straps together. It can also connect two pieces of rope which is why it is technically a type of “bend.” The water knot is also known as the overhand follow through, the ring bend, the grass knot, or tape knot. It is a popular knot used in rock climbing and is a reliable way to fasten flat straps together. The water knot becomes less reliable when you are working with tubular webbing and must be secured with a stopper knot.\n\nA water knot is useful in many situations, including: \n\n1. __Rock climbing__: The water knot is a popular climbing knot to connect two ends of webbing which can be used to anchor a climber to a rock when they are rappelling. They can also be used to make DIY grab handles or slings to be used in rock climbing. \n2. __Hammocks__: A water knot is commonly used to secure a hammock to its anchoring stakes. \n3. __Rescue operations__: Firefighters and other safety professionals use the water knot in rescue operations.\n\nFollow these simple steps for tying a water knot. \n\n1. __Lay out your straps__. Lay both of your straps next to each other. Beginning with one strap, make a loop at one end and thread the end through the loop to make a loose knot.\n2. __Thread the second strap through the back of the first knot__. Thread the end of the second strap through the back of the first loose knot and loop it over the wrapped front of the knot and around to the back.\n3. __Pass the second strap through the front of the first knot__. Thread the second strap's end through the front of the first loop so the second tail comes out in the opposite direction to the first tail. Both knots will now be connected. Make sure you have more than four inches of tail on either side. \n4. __Tighten the knots__. Tighten both knots together, creating a firm anchor point where both knots are weaved together.\n\nHere are three tips that will help you make your water knot as secure as possible.\n\n1. __Leave enough tail__. When you tie your water knot, make sure to leave at least four inches of tail at the end of both conjoined straps. The long tails will help ensure that your knot won’t come undone even with a little bit of slippage. \n2. __Use flat straps for webbing__. Instead of tubular webbing, make sure to use flat straps. Tubular webbing can decrease the strength of the knot by up to 40 percent. \n3. __Keep the straps flat__. When threading knots through each other, ensure the straps line up and create a flat fold to increase the knot's strength.\n\nClimbing is a high-impact activity with an elevated risk of serious injury. Practice, proper guidance, and extensive safety precautions are essential when attempting a climbing pursuit. This article is for educational and informational purposes only, and is not a substitute for professional instruction or guidance.\n\nTake your climbing mastery to new heights with the [MasterClass Annual Membership](https://www.masterclass.com) and exclusive video lessons from Alex Honnold and Tommy Caldwell, two of the world’s most accomplished climbers. Together they’ll help you get a grasp on climbing holds, balance, footwork, and more, plus teach you the ins and outs of ethical outdoor exploration. \nThe water knot is a strong knot used in rock climbing to secure two lengths of flat strap together.