iKamper Skycamp 4.0 Duo
#9 in Hard shellFull review
For one or two people with a smaller SUV or mid size truck who want the quickest fold out hard shell setup and a warm, quiet tent. Budget extra for the mattress.
iKamper $4,250$4,250
3.5/5
For families of four who want a wide hard shell bed with climate control options for well under name brand prices.
- 4Sleeps
- 69.9 x 79.5 inBed
- 174.2 lbWeight
- 1 yearWarranty
Check price at Amazon$1,869
Price checked October 31, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- A nearly 70 in wide bed sleeps three or four
- AC port lets you run a portable heater or air conditioner into the tent
- Roof crossbars carry a solar panel or light gear
- Lots of bed for the money at under $1,900
Cons
- At 174 lb it needs a strong roof or rack; check the dynamic load rating and follow the maker’s mounting instructions
- No published waterproof rating
- Only a one year warranty, parts only
The Naturnest Sirius 1 Plus family
Every Naturnest Sirius 1 Plus model we rank, smallest first. Ratings compare each against its own type.
| Model | Sleeps | Rating | Price |
|---|---|---|---|
| Naturnest Sirius 1 Plus | 3 | 3.5/5 | $1,499 |
| Naturnest Sirius 1 Plus XL (this one) | 4 | 3.5/5 | $1,869 |
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.
Specifications
| Model number | Sirius 1 Plus XL |
|---|---|
| Sleeping | |
| Shell | Hard shell |
| Opens | Folds out |
| Sleeps | 4 |
| Mattress | 69.9 x 79.5 in |
| Bed area | 38.6 sq ft |
| Mattress thickness | 2 in |
| Anti-condensation mat | Yes |
| Weather | |
| Fabric | 420D flame retardant waterproof Oxford |
| Season rating | 4 season |
| Annex | Optional |
| On the vehicle | |
| Weight | 174.2 lb |
| Closed size | 74.8 x 51.6 x 12.4 in |
| Open size | 80.7 x 74.8 x 46.9 in |
| Closed height | 12.4 in |
| Warranty | 1 year |
Alternatives in this type
Naturnest Sirius 1 Plus
#10 in Hard shellFull review
For small families on a budget who want a fast opening hard shell with power and a skylight.
Amazon $1,499$1,499
iKamper Skycamp 3.0
#12 in Hard shellFull review
For families who want a proven king size fold out hard shell at a lower price than the Skycamp 4.0 Quad, and can do without built in lights.
iKamper $3,425$3,425
Compare
Compare the Naturnest Sirius 1 Plus XL with any other tent →
More from Naturnest: every Naturnest product ranked.