Bikepack Stuff Sack Sizing: Copper Spur HV UL2 vs UL3
By Sleeping Bags, Tents, Pads & Outdoor Gear | Published: 2026-11-03
Category: Comparisons
Compare the Copper Spur HV UL2 and UL3 Bikepack stuff sacks on fit, packing, and price to choose the right replacement for your bike touring setup.
Quick answer
Choose the stuff sack that matches your tent model: the Copper Spur HV UL2 Bikepack Stuff Sack for UL2 tents and the Copper Spur HV UL3 Bikepack Stuff Sack for UL3 tents. Both are identical to the original stuff sacks shipped with 2021 or newer Bikepack models, so sizing is guaranteed.
Why model-specific sizing matters for bikepacking
Bikepacking often means strapping your tent to handlebars or a frame bag, where an ill-fitting stuff sack can lead to a bulky, unstable load. The Copper Spur HV UL2 and UL3 Bikepack stuff sacks are designed specifically for their respective tents, so you get the intended compressed size and shape. Using a generic sack risks a looser bundle that shifts while riding.
The trade-off: price vs. exact fit
The UL2 sack costs slightly less than the UL3 sack, but that difference reflects the smaller size rather than a quality gap. If you own both tents, you could theoretically use the larger UL3 sack for the UL2 tent, but the extra fabric would add bulk and defeat the purpose of a precise bikepacking setup. For most riders, matching the sack to the tent is the better trade-off.
Key trade-offs
- Price: The UL2 sack is priced at $25.90, while the UL3 sack is $26.25—a small difference that reflects the size difference, not quality.
- Packed size: Each sack is sized for its specific tent, so the UL2 sack is smaller and lighter than the UL3 sack. Choose based on your tent model, not on trying to save a few dollars. Never size up or down; a mismatched sack adds bulk or leaves your tent loose.
- Pole bag inclusion: Neither sack includes a pole bag. If you need a pole bag, you'll have to source one separately. Check whether your tent's pole bag is still functional before ordering.
Product facts
- Copper Spur HV UL2 Bikepack Stuff Sack: Identical to the stuff sack that shipped with the Copper Spur HV UL2 Bikepack (2021 or newer). Guarantees a perfect fit for your UL2 tent, so you can pack with confidence.
Copper Spur HV UL2 Bikepack Stuff Sack - Copper Spur HV UL3 Bikepack Stuff Sack: Identical to the stuff sack that shipped with the Copper Spur HV UL3 Bikepack (2021 or newer). Ensures the correct size for your UL3 tent, avoiding a loose or oversized pack.
Copper Spur HV UL3 Bikepack Stuff Sack
Which stuff sack should you get?
Best for
- Owners of a Copper Spur HV UL2 Bikepack (2021 or newer) needing a replacement stuff sack.
- Owners of a Copper Spur HV UL3 Bikepack (2021 or newer) needing a replacement stuff sack.
Not for
- Those with a different tent model—these sacks are sized exclusively for the Copper Spur HV Bikepack series.
- Riders who need a pole bag included; these sacks do not include one.
