Outdoor Research Hydroseal Drycomp Sacks

A band of air permeable fabric makes this the easiest to use dry compression sack available.
Features:

• Waterproof fabric band purges air during compression
• Durable, waterproof coated fabric
• Fully taped seams
• 32 1/2 x 9in. (83 x 23cm.)
• 23.2 Liters
• Weight: 10.2oz

The Hydroseal DryComp AirX Sack from OR is a compression sack that goes above and beyond the call of duty with trail-smart features and efficient compression.
Features:

• Air-permeable waterproof fabric protects your gear while purging air
• Taped seams for extra waterproofing
• Roll-top waterproof closure with buckle seals out water
• Dual-use internal zippered pocket for small items or stuff sack storage
• Four compression straps
• External daisy chain for extra gear
• Webbing bottom handle for easy hauling

Specifications:

• Fabric: Nylon
• Size 1Dimensions: 27.5 x 7 inchesVolume: 707 cu. in.Weight: 7.9 ounces
• Size 2Dimensions: 30 x 8 inchesVolume: 1021 cu. in.Weight: 8.3 ounces
• Size 3Dimensions: 32.5 x 9 inchesVolume: 1418 cu. in.Weight: 9.2 ounces
• Size 4Dimensions: 35 x 10 inchesVolume: 1905 cu. in.Weight: 11.1 ounces