The USMC small waterproof bag or MAC sac is a great way to Keep your gear dry in the outdoors. The Mac Sac was developed with the US Marine Corps by Sealline to be a lightweight Compression stuff sack and used within the military pack systems.  The size is perfect for everyday items to ensure your gear stays dry in the outdoors. There is also a built-in air purge valve is made to release unwanted air causing bulk making it easier to pack. 

Features & Specs 

• Ultralight and rugged Made with 200D High-tenacity polyurethane coated Oxford nylon
• Flexible purge valve
• Dry Seal dual-strip closure
• PVC Free
• NSN# 8465-01-542-7688
• 3.3 ounces
• 7” x 13”, 549 Cubic inches 
• 1 per order
• Surplus used good condition