The title says it all. It is a knife sheath made out of a inner tube. It can even slide onto your belt.

Step 1: Materials

You will need:
1-Bicycle Inner tube (split lengthwise)
1-Spool of Thread (I used canvas thread)
1-Needle
1-Knife or Something of the Sort
1-Thing of Adheasive Velcro
1-Pair of Scissors

Step 2: Sizing It Up

Step 3: Sew, Sew, and Sew Again

Get your thread and needle and sew up both side. Be sure you don't sew up the top flap, and make sure that it is inside out.

Step 4: Flip It Around

Turn that bad boy inside out. I found the best way is to push something like scissors or a pencil from the bottom.

Step 5: Velcro, Velcro, Everywhere

Not really; just add a little on the flap and the other spot, shown in picture.

Step 6: The Belt Loop

Cut two slits about a half inch to an inch away from each other. Both slits need to be long enough to slip your belt through.

Once you do this, you are done! Now go embrace your inner Bear Grylls and run through the woods like a maniac with your new knife sheath by your side!