Quick Facts:
- Matchup: 23Zero Horizon vs Everest XD, two side-opening aluminum hardshells for families.
- Capacity: Horizon 3 sleeps 3 adults; Everest 4 sleeps 4 adults.
- Bed size: 68″ x 83″ vs 70.86″ x 82.67″, about 39 vs 41 square feet.
- Weight: 246 lb vs 302 lb.
- Heater port: Horizon takes 5-inch ducting; OVS lists a heater port without a size.
- Price: $4,295 for the Horizon 3 at Spirit of 1876; $3,299.99 regular price for the Everest 4.
- Best for: Families who want hardshell speed and a rack rated for a heavy tent.
 9 min read
In This Comparison
- 23Zero Horizon vs Everest: The Short Answer
- 23Zero Horizon 3 and Everest 4 Specs Side by Side
- Sleeping Space: 3 Adults vs 4 on Nearly the Same Bed
- Weight and Your Rack: 246 vs 302 Pounds
- Fabric, Heat and Setup
- What Owners Say About Each Tent
- 23Zero Horizon vs Everest: Which One Fits Your Family?
- Final Thoughts
- Frequently Asked Questions
23Zero Horizon vs Everest: The Short Answer
The 23Zero Horizon vs Everest decision comes down to price, weight and how you count sleepers. Both are side-opening aluminum hardshells built for families. The 23Zero Armadillo Horizon 3 costs $4,295 and weighs 246 pounds. In contrast, the OVS XD Everest 4 lists at $3,299.99 and weighs 302 pounds. Pick the Horizon for less weight and a 5-inch heater port. Instead, choose the Everest to save about $995, comparing Spirit of 1876’s Horizon price with the OVS list price. You also get the stronger published warranty.
Their beds sit within 2 square feet of each other, a small difference in the 23Zero Horizon vs Everest comparison. Even so, 23Zero rates the Horizon 3 for three adults, while OVS rates the Everest 4 for four. In other words, the rating gap reflects labeling more than floor space. Spirit of 1876 sells both and calls them 4-person family tents in its own March 2026 comparison.
Space is the first thing I look at, since I usually camp with my girlfriend, her son and my son. Four of us fill either bed. So your roof rack, your budget and the features below decide it.
I flew from California to Castle Rock, Colorado, to put your rooftop tent questions to Mike, who owns Spirit of 1876. His answers on hardshells and roof weight shape this comparison. I have not slept in either tent, so the rest draws on 23Zero and OVS specs and on owner reports.
23Zero Horizon 3 and Everest 4 Specs Side by Side
| Spec | 23Zero Armadillo Horizon 3 | OVS XD Everest 4 |
|---|---|---|
| Sleeps | 3 adults | 4 adults |
| Sleeping area | 68″ x 83″ | 70.86″ x 82.67″ |
| Open size | 75.25″ W x 89″ L x 50.5″ H | 74.8″ x 85.8″ x 54″ |
| Closed size | 55.5″ x 75.25″ x 13.25″ | 74.8″ x 52.36″ x 13″ |
| Weight | 246 lb with rails and ladder | 302 lb |
| Shell | 14-gauge welded aluminum | Insulated honeycomb aluminum |
| Tent fabric | ECO13B with LST | 320g ripstop polycotton, blackout coating |
| Mattress | 2″ self-inflating | 2″ high-density foam |
| Heater port | Up to 5″ ducting | Heater and AC port, size not listed |
| Gear on top | T-slot rails, 22 lb | Crossbars, no rating on OVS page |
| Cold-weather extras | Snow pole; insulation kit optional | Cold weather liner and anti-condensation mat included |
| Warranty | 2-year limited (23Zero warranty policy) | 6-year fabric, limited lifetime structural |
| Price | $4,295 | $3,299.99 regular |
Specs come from the 23Zero Horizon 3 page and the OVS XD Everest page. Spirit of 1876 rounds the weights to 250 and 300 pounds. Also, the smaller pair follows the same pattern: the Horizon 2 weighs 205 pounds at $3,995, and the Everest 2 weighs 250 pounds at $2,999.99.
More Hardshells at Spirit of 1876
Spirit of 1876 also stocks the hardshells below, from two-person shells to family sizes.
More Hardshells at Spirit of 1876
Sleeping Space: 3 Adults vs 4 on Nearly the Same Bed
On paper, the 23Zero Horizon vs Everest sleeper count differs by one adult, in the Everest’s favor. In practice, its bed measures about 41 square feet against about 39 for the Horizon 3. The Everest runs 2.86 inches wider, while the Horizon runs a third of an inch longer. As a result, a family of four fits both tents the same way, and two adults with two kids is the realistic crew for either.
Headroom favors the Everest. OVS lists a 54-inch open height, compared with 50.5 inches for the Horizon. However, the Horizon’s self-inflating mattress adds a trick the foam pad lacks. Spirit of 1876 notes you deflate it to pack sleeping bags and pillows inside the closed tent.
Mike frames the bigger choice well. He says hardshells close in about 30 seconds and carry gear on top. However, they cost about twice as much as soft shells and offer less room. So if raw space for a crew of four matters most, a soft shell gives more of it per dollar. Our rooftop tent size guide walks through the math.
Weight and Your Rack: 246 vs 302 Pounds
Weight splits the 23Zero Horizon vs Everest matchup hardest. The 23Zero roof load guide puts most passenger vehicles between 100 and 165 pounds of dynamic load, the rating for driving. Both tents exceed it. The Horizon 3 sits 81 pounds over the top of the range, and the Everest 4 sits 137 pounds over. In short, either tent needs a rack rated well above your factory roof.
Mike sees the same mistake again and again. Buyers bolt a tent to the factory rack on a new 4Runner. However, those racks target cargo boxes, skis and bikes, not 200-pound tents. He also points to Jeep gutter mounts on fiberglass hardtops, which top out at 150 pounds. Still, he spots 200-pound tents on them around Colorado. The clip below opens at the weight and safety part of the interview, 17 minutes and 24 seconds in.
Static Load and the Rest of Your Build
Parked, the rack also carries your family. Check its static rating as closely as the dynamic one, then add bumpers, drawers, a fridge, batteries and water. Mike’s advice is to get out the calculator. Our guides on static vs dynamic weight ratings and how to calculate payload capacity cover the numbers. If your rooftop tent weight limit sits near 250 pounds, the 56 pounds between these tents decides the matchup for you.
Fabric, Heat and Setup
Fabric and Light
Fabric splits the 23Zero Horizon vs Everest pair too, though less sharply. 23Zero builds the Horizon from ECO13B fabric with Light Suppression Technology, which cuts incoming light. In contrast, OVS uses a 320g ripstop polycotton with a 5000 PU waterproof rating and a blackout interior coating. Spirit of 1876 sums it up as blackout polyester against a classic, breathable canvas feel.
Heat for Cold Nights
I do a lot of winter camping with diesel and gas heaters, so the heater port is the spec I’d point you to first. The Horizon 3 accepts ducting up to 5 inches. Meanwhile, the Everest ships with a cold weather liner and an anti-condensation mat. OVS lists a heater port but no duct size. So the Horizon wins on a known duct size, and the Everest wins on cold gear included. Our best diesel heaters roundup covers the heaters to pair with either port.
Setup Time and Gear on Top
OVS rates the Everest at 2 minutes up and 2 minutes down. 23Zero lists no time for the Horizon, though its front rainfly hoop replaces spring poles over the door. For gear, the Everest ships with crossbars on its lid, while the Horizon’s T-slot rails carry 22 pounds.
What Owners Say About Each Tent
On the 23Zero Horizon vs Everest question, owner feedback is uneven. We read through Reddit, owner forums, YouTube and the OVS review page. The Everest has more owner reports, while the Horizon 3 is newer. As a result, several Horizon themes come from owners of earlier 23Zero Armadillo hardshells with the same LST fabric.
23Zero Horizon 3 and Armadillo Owners
Horizon 3 owner reports are few so far. One owner on Reddit calls the tent rock solid on desert trips, and owners of other 23Zero tents report no leaks in heavy rain. Owners of earlier Armadillo models praise the LST fabric for keeping the tent dark past sunrise. Several who moved over from iKamper also rate the build quality as comparable to iKamper. On the downside, condensation reports are mixed, and earlier Armadillo owners found the 2-inch foam pad thin for side sleepers. The Horizon 3 swaps in a self-inflating mattress, though it stays 2 inches thick.
Everest Owners
Everest owners praise the build first, including stainless hardware, good zippers and a stiff aluminum shell. OVS customer service also earns praise on Reddit, YouTube and the OVS site. Two owners say OVS replaced or credited a defective earlier OVS tent. One owner reports 18-degree nights with the liner, though he still runs a diesel heater. Another uses the tent in heat above 105 degrees. Weight tops the complaints. In addition, one owner couple on YouTube found the side closing straps short and hard to reach. One owner also wants the heater duct moved higher, since it sits low in the tent.
23Zero Horizon vs Everest: Which One Fits Your Family?
Pick the 23Zero Horizon 3 If…
Pick the Horizon 3 if your rack rating sits closer to 250 pounds than 300, or if you camp in winter with a heater. Its 5-inch heater port and LST fabric suit cold nights and late mornings. You pay for it, though, since $4,295 works out to about $1,432 per rated sleeper.
Pick the Everest 4 If…
Pick the Everest 4 if price matters and your rack handles 302 pounds plus your family. At $3,299.99, its OVS list price runs $995 below Spirit of 1876’s Horizon 3 price, or about $825 per rated sleeper. Also, the OVS Everest rooftop tent ships with the liner, condensation mat and crossbars, plus a 6-year fabric warranty. Spirit of 1876 lists the 2-person Everest online, and its March 2026 comparison covers the Everest XD 4. Mike says the shop’s website shows about 20 percent of what it carries, so call or text for the 4-person.
See the 23Zero Horizon and Everest at Spirit of 1876
To settle the 23Zero Horizon vs Everest decision in person, call ahead to Spirit of 1876 in Castle Rock. The shop showed both tents in its showroom in March 2026, and it handles fitment and installs.
23Zero Armadillo Horizon 3
Three adults get a 68 by 83 inch bed, and LST fabric keeps the tent dark for later mornings.
- 68 x 83 in bed for 3 adults
- 246 lb with rails and ladder, lighter than the Everest 4
- Heater/cooler port takes up to 5-inch ducting
- LST fabric and a 2-inch self-inflating mattress
- At 246 lb it needs an aftermarket rack
- Rated for 3 adults, not 4, and opens on the left side only
OVS XD Everest
Spirit lists the 2 person Everest online; ask the shop about the 4 person, with its 70.86 by 82.67 inch bed. Both ship with a cold weather liner and anti-condensation mat.
- Cantilever aluminum shell in 2 or 4 person sizes
- Cold weather liner and anti-condensation mat included
- Crossbars on the lid carry extra gear
- 6-year fabric and limited lifetime structural warranty
- The Everest 4 weighs 302 lb, heavier than the Horizon 3
If neither weight works for your rig, read our softshell vs hardshell rooftop tents guide before you commit to a 4 person hardshell rooftop tent.
Final Thoughts
Both tents solve the same problem: a family-size hardshell without the soft shell pack-down routine. Still, the 23Zero Horizon vs Everest choice turns on two numbers, 246 and 302 pounds, before it turns on features. The Horizon 3 is the lighter tent, with a 5-inch heater port and a self-inflating mattress. However, the Everest 4 is the better value and carries the stronger published warranty.
Neither 4 person hardshell rooftop tent is light. Both need an aftermarket rack, and a family of four fills either bed.
With four of us, bed space is a wash. So I’d lean toward the Horizon 3 for winter trips, because its 5-inch heater port fits the way I camp with diesel and gas heaters. If the budget is tight and your rack has the headroom, the Everest 4 gives a family more tent per dollar. Either way, confirm your rack’s dynamic and static ratings with the maker before you order.
Frequently Asked Questions
Is the 23Zero Horizon 3 big enough for a family of four?
23Zero rates it for three adults on a 68 by 83-inch bed. Even so, the Everest 4 rates four adults on a bed less than 2 square feet larger. Two adults and two kids fit either tent, while a family with teens will find both snug.
How much does the OVS Everest rooftop tent weigh?
OVS lists the Everest 4 at 302 pounds and the 2-person Everest at 250 pounds. By comparison, the 23Zero Horizon 3 weighs 246 pounds with rails and ladder. All three exceed the 100 to 165-pound dynamic rating 23Zero cites for most passenger vehicles.
What rooftop tent weight limit do I need for these tents?
While driving, your rack’s dynamic rating must exceed the tent’s weight, 246 or 302 pounds. Parked, the static rating must also cover your family and bedding. Check both numbers with your vehicle and rack makers before you buy.
Which is better for winter camping, the Horizon 3 or the Everest XD?
The Horizon 3 takes heater ducting up to 5 inches and uses 23Zero’s LST fabric. Meanwhile, the Everest ships with a cold weather liner and an anti-condensation mat, and one owner reports 18-degree nights with the liner plus a diesel heater. The Horizon wins on a known duct size, and the Everest wins on cold gear included. Plan on a heater with either tent in real cold.
Is the OVS Everest worth the money compared with 23Zero?
Yes, if your rack carries 302 pounds. For a family, the Everest 4 lists for $995 less than Spirit of 1876’s Horizon 3 price and rates one more sleeper. It also carries a 6-year fabric and limited lifetime structural warranty, against 2 years for the Horizon. In contrast, the Horizon 3 earns its price with lower weight, a 5-inch heater port and a self-inflating mattress.
Related Reading
Advertising disclosure: Spirit of 1876 is a 4wdTalk advertising partner and an authorized dealer of both tents. The product modules above are paid placements. Spirit of 1876 did not pay for, review, or approve this article before publication. This comparison draws on 23Zero and OVS published specifications, current owner reports, and a sit-down interview with Spirit of 1876 owner Mike in Castle Rock, Colorado. 4wdTalk has not slept in either tent or deployed one in the field.