In a nutshell:
The Regulator™ Sleeping Bag System(Patent Pending) introduces a revolutionary new concept to sleeping bags and sleep systems, offering a thoroughly modular design, using the finest shell material and synthetic insulation available.

Three primary bags, and a multitude of choices. This unique system lets you "regulate" your sleep system for any given environment, like no other, with a temperature range of 80° + fahrenheit down to -50°.
The Slick Bag is a simple, traditional style bag with all the latest technologies, and is a great stand-alone bag. Add the MOB as an overbag in extreme temps.
The Base Bag is great as a stand-alone product, or add layers of MOBs.
The MOB (modular over bags) is also a great stand alone, sectional bag. Or, pick and choose components you need as layers for your Base Bag.

After perusing this website, feel free to call us with any questions on our new Regulator™ Sleeping Bag System at 1-800-222-6139, or 1-866-308-1911.
Also, check our message boards - they are a great learning resource with additional photos and commentary.