X-Mid 2
Durston
Fits
2 lb 2.3 oz92 × 52 in, 43 in peak
Big Agnes Copper Spur UL2
Floor 88 × 52/42 in, 40 in peak, vestibules 9 sq ft + 9 sq ft. Drawn to scale from the maker's listing; the grid is 6 in.
- 2 regular padsFits
- 2 wide pads3.1 in past the wallDoesn't fit
- 2 mummy padsFits
- A regular pad and a wide pad0.6 in past the wallDoesn't fit
Which pads fit
An inch or more to every wall. Sit-up room +2.7 in.
They don't fit side by side: 3.1 in past the wall.
An inch or more to every wall. Sit-up room +2.7 in.
They don't fit side by side: 0.6 in past the wall.
Pads side by side at their listed sizes, with the average man (5 ft 9 in) lying on each. "Tight" is under an inch to a wall or the sloping roof: the fabric gives, but a wet wall wets what touches it. Open it in TentCheck to try your own pads, cots and gear, or read how fits are checked.
Where 2 wide pads fit instead
The lightest 2-person backpacking tents where they fit with an inch to every wall.
Lunar Duo
Six Moon Designs
Fits
2 lb 13 oz90 × 54 in, 45 in peak
Copper Spur UL2 XL
Big Agnes
Fits
3 lb 5 oz96 × 54 in, 41 in peak
Check every backpacking tent for 2 wide padsEvery 2-person tent with two wide pads, drawn
Where a regular pad and a wide pad fit instead
The lightest 2-person backpacking tents where they fit with an inch to every wall.
Duplex Pro
Zpacks
Fits
1 lb 3.2 oz84 × 50 in, 48 in peak
Unbound 2
Hyperlite Mountain Gear
Fits
1 lb 6 oz90 × 48 in, 48 in peak
X-Mid 2
Durston
Fits
2 lb 2.3 oz92 × 52 in, 43 in peak
Check every backpacking tent for a regular pad and a wide pad
Headroom
| Roof overhead | Floor | Share |
|---|---|---|
| Anywhere | 28.7 sq ft | 100% |
| 12 in or more | 27 sq ft | 94% |
| 24 in or more | 20.6 sq ft | 72% |
| 36 in or more | 7.9 sq ft | 27% |
From the modeled roof, not measured. About 36 in is where an average adult sits up straight on a pad: a 35 in sitting height, plus the pad.
The numbers
| Floor (listed) | 88 × 52/42 in, 28.7 sq ft |
|---|---|
| Peak | 40 in (3 ft 4 in) |
| Vestibules | 9 sq ft + 9 sq ft |
| Sleeps (maker) | 2 |
| Packed weight | 48 oz (3 lb) |
| Packed volume | 4 L |
| Regular pads that fit | 2 with an inch to every wall |
| Sit-up room on a pad, at the peak | +4 in for 35 in sitting height |
| Pitched footprint | 88 × 102 in (7 ft 4 in × 8 ft 6 in), floor and vestibules |
| Groundsheet to cut | About 86 × 50/40 in |
On the campsite
Floor and vestibules together cover 88 × 102 in. On a square tent pad, as campgrounds list them: 8 × 8 ft: doesn't fit; 10 × 10 ft: fits; 12 × 12 ft: fits. Guylines and stakes need more room around that.
For a groundsheet, cut it a little smaller than the floor, about 2 in, so rain running off the fly doesn't collect on it and run under the tent: about 86 × 50/40 in.
Notes
Floor 88 × 52/42 in, 40 in peak, two 9 ft² side vestibules. Big Agnes now sells this as the Copper Spur UL2, with the same floor and peak as the HV UL2 it replaced. Spec-sheet floors can run small, so measure yours before trusting a snug fit.
Sources
- Big Agnes: Copper Spur UL2 Ultralight Tent Checked 2026-10-21
Roof shapes are modeled from the floor, the peak and how the poles hold the walls, not measured. Treat a result within an inch or two as too close to call.