Sea to Summit Compression Sack M (stscompsackm)
The Sea to Summit Compression Sack M (stscompsackm) is the heavy-duty member of the compression family. Where the Ultra-Sil version chases minimum weight, this one is cut from 210D PU-coated nylon and built to take abuse in a duffel, a truck bed or a canoe. Four evenly spaced straps pull a 15 liter load down to roughly 5 liters without letting the sack bulge, and the "Flip-Top-Lid" design keeps the straps from tangling every time you open it.
Features
- "Flip-Top-Lid" design prevents strap tangling
- Made of heavy-duty 210D PU-coated nylon
- Four straps for even compression; eliminates bulging
- Extra-long straps so the sack is easy to fill to maximum capacity
- Nylon webbing pull handle on the bottom
- Black body with end panels in blue, red, yellow, black or green
Specifications
| Model |
Compression Sack – M (Medium) |
| SKU |
stscompsackm |
| Size |
8" x 18" |
| Volume (max / compressed) |
15 L / 5 L |
| Fabric |
210D PU-coated nylon |
| Compression |
4 straps with flip-top lid |
| Handle |
Nylon webbing pull handle on base |
Frequently Asked Questions
How much does the Sea to Summit Compression Sack M compress?
The Sea to Summit Compression Sack M (stscompsackm) takes a 15 liter load down to roughly 5 liters once all four straps are cinched — about a two-thirds reduction. It measures 8" x 18" uncompressed.
What is the Sea to Summit Compression Sack M made of?
The Sea to Summit Compression Sack M (stscompsackm) uses heavy-duty 210D PU-coated nylon, a noticeably tougher and thicker fabric than the 30D siliconized Cordura® on the Ultra-Sil version. The trade-off is weight: you gain abrasion resistance and give up a couple of ounces.
Which size Sea to Summit Compression Sack should I choose?
The Sea to Summit Compression Sack M (stscompsackm) sits in the middle of a five-size range that runs 6 L (XS), 10 L (S), 15 L (M), 20 L (L) and 30 L (XL). The M is the common choice for a three-season sleeping bag or a bulky insulated jacket; go up to the L if you are packing a winter bag.
Is the Sea to Summit Compression Sack M waterproof?
No. The Sea to Summit Compression Sack M (stscompsackm) is a compression sack, not a dry sack. The PU coating sheds light moisture, but the seams are not taped and the closure is not a watertight roll top. For waterproof storage look at the Sea to Summit eVent or Ultra-Sil Dry Sack range.
What should you pack in the Sea to Summit Compression Sack M?
At 15 liters the Sea to Summit Compression Sack M (stscompsackm) suits a three-season sleeping bag, a down parka, or a multi-day clothing kit. Lofty compressible items gain the most from the four-strap system; hard or sharp gear is better carried elsewhere.
Where can I buy the Sea to Summit Compression Sack M?
You can buy the Sea to Summit Compression Sack M (stscompsackm) at Going Gear, an authorized Sea to Summit dealer. Every sack ships new in original packaging with the full manufacturer warranty.
