I had to adjust this strap until it's about a foot long in order to properly keep the rig down, but that's due to my small frame. The trap itself does not shift or wiggle after you set it, and I have had no issues with it. Very satisfied.
It's pretty simple: if you have a Micro Fight Chest Rig, you're going to need this. The Back Strap provides the retention necessary to keep the Chassis close to your body.
This strap can also be used as a sling if you wish to carry your Micro Fight in a cross-body configuration as a "Go Bag." The Micro Fight Back Strap has a maximum adjustment of 36 inches and a minimum adjustment of 8 inches.
NOTE: The BACK STRAP is part of the Micro Fight Chest Rig System. This item does not include the chassis, shoulder straps, magazine inserts, or any other accessories. The BACK STRAP is a necessary component of the Micro Fight Chest Rig System when running as a stand-alone system and highly suggested on a plate carrier.
Some images shown with optional accessories, sold separately.