It’s pretty simple - Safariland 030 Buckleless Web Underbelt, Hook-and-Loop Lined, 1.50 030-XX-2

If you are looking for the most technologically advanced long strip of Velcro, this isn’t it. If you want a simple inner belt to support your outer competition belt, this will do. I’ve had this as well as the DAA. Minus some minor graphics on the DAA, they are essentially the same thing. Good solid product for a very reasonable price.