I have two pretty much identical bags (long x-wing type). one is camo and filled with walnut tumble media and has a carry strap. it is used on the rail of my tower stands and is a joy to carry and if you beat it down to conform to the rail, very stable.
the other is suede leather filled with granite dust from the local quarry. it is soft enough to form to the rifle but packs HARD and is VERY heavy.