The iKamper Skycamp 4.0 Quad is the better tent overall, rated 3.7 to 3.5. The iKamper Skycamp 4.0 Quad leads on weather, weight and warranty. The Naturnest Sirius 1 Plus XL wins on value. The Naturnest Sirius 1 Plus XL costs $2,831 less ($1,869 vs $4,700).
For families with a full size SUV, van or truck who want a king size bed in a hard shell that still opens in about a minute. Budget extra for the mattress and check the rack load rating.
iKamper $4,700For families of four who want a wide hard shell bed with climate control options for well under name brand prices.
Amazon $1,869Prices were last checked October 31, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Each factor is scored 0-100 against the same fixed reference points for every hard shell tent; a clear win is highlighted. How we rank explains each one.
| Factor weight | iKamper Skycamp 4.0 Quad | Naturnest Sirius 1 Plus XL |
|---|---|---|
| Overall rating | 3.7/5 | 3.5/5 |
| Value 30% | 53 $96.21 per sq ft of bed ($4,700, 48.9 sq ft) | 100 $48.43 per sq ft of bed ($1,869, 38.6 sq ft) |
| Weight 20% | 80 157 lb for 48.9 sq ft of bed (3.2 lb per sq ft) | 42 174.2 lb for 38.6 sq ft of bed (4.5 lb per sq ft) |
| Weather 20% | 100 3,000 mm waterproof rating, 4 season | 62 waterproof rating not published, 4 season |
| Comfort 15% | 50 mattress and extras not published (neutral score used) | 32 2 in mattress, anti-condensation mat |
| Warranty 15% | 25 2-year warranty | 0 1-year warranty |
| iKamper Skycamp 4.0 Quad | Naturnest Sirius 1 Plus XL | |
|---|---|---|
| Sleeping | ||
| Shell | Hard shell | Hard shell |
| Opens | Folds out | Folds out |
| Sleeps | 4 | 4 |
| Mattress | 84.6 x 83.1 in | 69.9 x 79.5 in |
| Bed area | 48.9 sq ft | 38.6 sq ft |
| Mattress thickness | - | 2 in |
| Anti-condensation mat | - | Yes |
| Bedding stays inside | Yes | - |
| Built-in lights | Yes | - |
| Weather | ||
| Fabric | BreathWeave 320 gsm poly-cotton blackout canvas (35% recycled poly, 65% cotton) | 420D flame retardant waterproof Oxford |
| Waterproof rating | 3,000 mm | - |
| Season rating | 4 season | 4 season |
| Annex | Optional | Optional |
| On the vehicle | ||
| Weight | 157 lb | 174.2 lb |
| Closed size | 85.375 x 55.125 x 13.75 in | 74.8 x 51.6 x 12.4 in |
| Open size | - | 80.7 x 74.8 x 46.9 in |
| Closed height | 13.8 in | 12.4 in |
| Static load | 900 lb | - |
| Ladder | 88.5 in | - |
| Setup time (maker) | 1 min | - |
| Warranty | 2 years | 1 year |
| Released | 2026-04 | - |
