Designed specifically to fit billingham bags with delta shoulder sling fixings 225 335 445 and 555 but will also fit onto a waist belt the delta is lightly padded with closed cell foam has a drawcord weatherproof neck and features a no crush press stud fastening which allows you to slip your fingers behind the flap and close the studs without pressing on the pouch contents deltas are sold seperately but two will fit onto each bag