About this item
A 5-liter ultralight compression sack that squishes bulky gear and clothing down by as much as two-thirds. Bluesign-approved nylon and three-strap compression make packing faster and your bag smaller.
Materials & Construction
| Fabric | Bluesign-approved 30D Ultra-Sil Cordura nylon |
| Finish | Non-PFC DWR |
Care & Storage
| Cleaning | Wipe clean, spot wash if needed |
Key Features & Specs
| Volume | 5 liters |
| Compression | Up to two-thirds |
| Straps | 3 (2 ladderlock + 1 side-release) |
Dimensions & Weight
| Packed Size | 6" x 11.7" |
| Product Weight | 0.12 lbs |
What's in the Box
| Compression Sack | 1 |
4 Reasons You Need The Sea to Summit Ultra-SIL Compression Sack

1. Squishes Gear by Two-Thirds
Bulky gear is the enemy of a well-packed bag.This 5-liter sack compresses clothing or a sleeping bag down dramatically, freeing up real space for everything else. What used to eat a third of your pack now takes a fraction of the room.

2. Slippery Fabric, Easy Packing
Some stuff sacks fight you on the way into a pack - this one doesn't.Bluesign-approved nylon with a non-PFC DWR finish slides into tight corners instead of jamming or catching. Packing gets faster, not more frustrating.

3. Three Straps, Even Compression
One strap just moves the bulk around - three straps actually remove it.Two ladderlock buckles plus one side-release compress evenly across the whole sack instead of squeezing just one end. You get a genuinely smaller, more stable result.

4. No Tangled Straps
Fumbling with gear in the dark gets old fast.A flip-top lid design keeps straps organized and out of the way, so you're not fighting knots at the end of a long day. Open it, use it, close it - no wrestling involved.
