You will need:
appr. 70-80 cm strapping
70-80 cm fabric as wide as the strap is
160-180 cm bais tape
a parachute clip
a carabin hook
Use a match or lighter to melt the ends of the strapping so it won't raffle.
Sew the fabric strip on the strapping. Sew as close to the edges as possible.
Now sew the bias tape on both sides.
Take parachute clip and pull a piece of bias tape through one side. Place the bias tape between the two ends of the strap. Sew the two ends of the strap together with the bias tape in between. Using fabric glue wrap a piece of bias tape or ribbon around the ends.
Attach the carabin hook to the other end of the parachute clip and sew it together.