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Sea to Summit Ultra-Sil Compression Sack

Sea to Summit Ultra-Sil Compression Sack
  • Color: Yellow
  • Color: Yellow
  • Color: Yellow
  • Color: Yellow
  • Color: Royal Blue
  • Color: Forest Green
  • Color: Forest Green
$39.95 - $54.95
Please select options


When you need to compress volume without significantly adding weight, the Ultra-Sil™ Compression Sack is an excellent solution. Made from a 30D diamond rip-stop siliconized CORDURA® fabric they can be compressed to one third of the original volume. Ideal for use inside your pack or travel bag when you need to compress clothing or bulky soft items to allow space for other essentials or fun holiday items.


In a perfect world, with perfect contents, this compresses down to 1/3rd its original volume (i.e. from 15 to 5 liters)

Best Use

Internal pack organization, packing up whatever you feel like belongs in a bag that can be compressed

What this bag could hold

6 liter: a layer, beanie, and gloves
10 liter: a puffy jacket & a compact sleeping bag
15 liter: all your clothes for a trip
20 liter: a tent or any Sea to Summit sleeping bag
30 liter: Sea to Summit sleeping bag and your extra layers

  • 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
  • Note: seams are not tape-sealed; therefore this product is not waterproof - only water resistant

Part Numbers

Option UPC MPN Store SKU
Yellow / Small 10L 9327868013784 176-50 COM455620386
Yellow / Medium 14L 9327868013791 COM456118177
Yellow / Large 20L 9327868013807 COM451106158
Royal Blue / Small 10L 9327868013685 COM483649746
Royal Blue / Medium 14L 9327868013692 COM481207687
Royal Blue / Large 20L 9327868013708 COM489253338
Royal Blue / XLarge 30L 9327868013715 COM481264079
Forest Green / Small 10L 9327868013838 COM505848446
Forest Green / Medium 14L 9327868013845 COM505117577
Forest Green / Large 20L 9327868013852 COM506525998