Ultra-Sil Compression Sack

Best Use

• Internal pack organization of soft items such as sleeping bags or puffy jackets.

Packability

• The ‘compressed volume’ in the specifications equals the difference between a fully extended and fully compressed Compression Sack. Most items will not reduce in volume by the listed 'compressed volume'. For example, a synthetic sleeping bag stuffed into a M Compression Sack may compress down from 14 to 9 Liters.

What this bag could hold

• 6 Liter: a layer, beanie, and gloves
• 10 Liter: a puffy jacket & a compact sleeping bag
• 15 Liter: Most three-season sleeping bags, including synthetics
• 20 Liter: Most four-season sleeping bags (except synthetics)
• 30 Liter: Sea to Summit sleeping bag and your extra layers, or a less-technical cold weather sleeping bag

• 30D Diamond Ripstop Siliconized CORDURA
• 4 straps for even compression
• Extra long straps so these sacks can really be filled to capacity
• Bar tack reinforced stress points
• Pull handle on the bottom
• Slippery finish for easy packing

IS THE ULTRA-SIL COMPRESSION SACK…?

• Waterproof? It is only water resistant. The seams are not tape sealed, and the top does not utilize a roll-top closure.

• Suitable for bikepacking? Not if it will be carried externally. If it is inside a bike bag, fine – if not, the 30D fabric may be damaged by contact with sharp or abrasive surfaces. We would suggest the eVent Compression Dry Sack as a handlebar bag.

• A good choice for a tent storage bag? Perhaps. Carrying the tent canopy in your pack (with the poles under the compression straps) is a great idea. However - the canopy may not compress that much. An Ultra-Sil Stuff Sack may be more appropriate.