This is a very unusual jacket from a little known outfitter called Str8Jax. It is made out of a synthetic material similar to the stuff they use to make backpacks. The clips are similar to those on a backpack as well. It is very strong jacket and very well made. There are no side or front loops for the arms, so the jacket is relatively easy to get out of unless special care is made to secure the arm strap by intertwining it through one of the back straps. The jacket is quite comfortable and highly recommended.