Ingredients:
1 old pair of jeans
Needle and thread or a sewing machine
Instructions (download here)

1.
Cut open the jeans along the seams, place both parts on top of each other and cut off diagonally below the knee.

2.
Now fold both halves along the long side, place them on top of each other and sew them together.

3.
Join both parts along the diagonal.

4.
Wear and use.