Cut two 3-foot lengths of 1-inch polyester webbing using a pair of scissors, creating your straps.
Fold down one end of one of the straps by 3 inches.
Sew down the end using a sewing machine, creating a loop. Sew over your stitches several times to ensure they hold.
Repeat Steps 2 and 3 for the other ends of the straps.
Hook one carabiner to each loop, using two carabiners for each strap. One carabiner hooks one end of the strap to the hammock. The other end of the strap travels around the tree, and the carabiner is used to hook the strap's end to the strap itself, where it is stretched between the tree and the hammock.