These are the same systems as the $149. They are in Very Nice condition.   They may have been used a couple of times. Some components may appear to be new. This is great way to save some money on one of the best sleeping bag systems in the world. The bags are ready to go.

Modular Sleep System - 4 Part

The MSS sleeping bags and other components are constructed to be used in conjunction with each other, or separately to complete an interoperable system known as the extreme cold weather sleeping bag. The MSS is designed to provide comfort in temperatures ranging from 50°F to -50°F when wearing various layers of extreme cold weather clothing.

The Water proof Bivy Cover is produced utilizing waterproof, moisture-vapor-permeable material with all seams heat sealed. The Compression Stuff Sack is constructed with water resistant materials with adequate volume for both bags as well as the bivy cover. This unique sack compresses the system to one cubit foot.

The 4- Part Modular Sleep System -NSN # 8465-01-445-6274 includes:

• Camo Green Patrol Bag
• Black Intermediate Bag
• Woodland Camoflauge Waterproof Bivy Cover
• Black Stuff Sack

Individual parts

• Camo Green Patrol Bag- NSN # 8465-01-398-0685,
• Black Intermediate Bag-NSN # 8465-01-398-0687,
• Woodland Camouflage Waterproof Bivy Cover-NSN # 8465-01-416-8517,
• Black Stuff Sack-NSN # 8465-01-398-5428