Adapter Kit includes Adapter Loops and D3 Clips.
The primary use for the Adapter Kit is to allow you to attach a Shoulder Strap to a Pocket Cap Front - making use of the small loops found on the top (and the side) of the Pocket Cap Front. This would be when you have a larger configuration, like a B4 or a B7, and you want to remove the Center Sections and go only with the two End Caps zipped together (this is a B0 SLIM). If you want a handle for that slim bag you would buy the Slim Handle Kit. That will let you use the Slim Handle AND the Shoulder Strap. But if you know you DON'T want a handle and you only want a Shoulder Strap, the you would buy this item, the Adapter Kit.