Bag: USMC MACs Sack. 9L Sealine-Waterproof (Made In USA)

MADE IN USA

USMC MACs Sack – 9L Sealine Waterproof Dry Bag

This isn't a fashion dry bag — it's Genuine USMC Issue. The MACs Sack 9L was built to keep critical gear dry in the field, and it brings that same military-grade protection to your kayak, ruck, or river trip. At just 4 oz, it disappears into your kit until you need it most.

Constructed from 210D Oxford Nylon with a high-tenacity polyurethane coating, the MACs Sack shrugs off abrasion, punctures, and moisture. The exclusive DrySeal roll-down closure creates a watertight seal that won't quit, and the low-profile flexible purge valve lets you compress the bag flat so it slides easily into hatches, backpacks, and tight spaces.

9 liters (549 cu. in.) of dry, protected storage for electronics, documents, clothing, or any gear you can't afford to lose to water.

Condition: Grade 1 — May show minor signs of warehouse handling or light use. No holes. Fully functional.

Key Features

• Genuine USMC Issue — military-spec construction and materials
• 210D Oxford Nylon with high-tenacity polyurethane coating for extreme durability
• DrySeal roll-down closure — exclusive watertight seal
• Air-tight compression via low-profile flexible purge valve
• Slides into hatches and backpacks — compact and packable
• Ultra-lightweight — only 4 oz per bag
• Made in USA

Specifications

• Capacity: 9 Liters / 549 cubic inches
• Weight: 4 oz
• Diameter: 7 in / 18 cm
• Height: 13 in / 33 cm
• Flat dimensions: 19.5″ × 10″
• Material: 210D Oxford Nylon with polyurethane coating
• Closure: Dry-Seal Roll-Down