Today, I'm going to demonstrate for you the two-handed tie. I have here a piece of suture material, two pieces of colored string tied together at a knot, and a sandbag. I haven't got gloves on. This is a nonsterile environment. It's a technique you can practice at home. So lift up your sand bag. Tuck your suture material underneath the sand bag. In your left hand, you have the red suture coming over your index finger into your hand. This forms what we call a bird's beak. In your right hand, you have the yellow suture material held taut. This is the hand that will be outside of the body cavity. You put your yellow suture inside your bird's beak, or your two fingers. You close your index finger and thumb together. You then twist your hand away from yourself. Lift up your index finger off your thumb, bend your yellow suture onto your thumb. Close your index finger. Let go with your right hand the yellow suture. Twist back underneath the red suture with your left hand. Grab the yellow suture with your right hand, and pull down-- first throw. Now I bend over my index finger with the red suture, and I go over my thumb. Tuck your thumb underneath the red suture. There is your bird's beak shape. Bring the yellow suture up with your right hand. Close your fingers together, making your bird's beak shape. Now you pull your fingers down through the loop you've created underneath the red suture. The red suture is now over your index finger. You open the bird's beak. You put the yellow suture onto your index finger. Close with your thumb. Let go with your right hand. Back underneath the red suture, grab the yellow suture with your right hand. Pull towards your body, your left hand pulling away from your body. There is your square knot. And now at normal speed, I will show you the two-handed tie.