Why this product
The Exo Terra Explorarium Large is the secondary mesh enclosure most reptile keepers buy when they need an outdoor sunning cage, a travel cage for a vet visit, or a quarantine setup that does not require a permanent glass terrarium. The collapsible steel frame and PVC coated polyester mesh fold flat into a carry bag, which means the cage lives on a closet shelf between uses rather than taking up permanent floor space.
For this review, we built our analysis from Exo Terra’s published spec sheet, recent Amazon owner photos, and direct comparison with three other reptile enclosures. Exo Terra did not provide a sample. Where we cite a measurement, the source is the manufacturer spec sheet or aggregate owner reports.
The defining trade with this enclosure is humidity. Mesh construction is the right design for ventilation and real sunlight UVB transmission, and it is the wrong design for a humid species like a tree frog, a dart frog, or a tropical chameleon kept long term. The Explorarium is a tool for specific tasks (outdoor sunning, travel, quarantine), not a permanent enclosure for high humidity species.
What Exo Terra claims (specs)
Exo Terra lists the Explorarium Large with a steel frame, reinforced corners, fine PVC coated polyester mesh, a front zipper door, and a top opening flap. The cage is collapsible and ships with a carry bag for storage and transport. The large variant is approximately 18 by 18 by 36 inches.
The cage positions for sub adult chameleons, juvenile bearded dragons during sunning, tortoise outdoor time, and quarantine of any small to medium reptile. Setup time per the manufacturer is 5 to 10 minutes from folded to assembled.
Who should buy
This enclosure is the right call for keepers who already have a primary glass terrarium and need a secondary cage for outdoor sunning sessions, vet visits, or quarantine. The collapsible design means the cage takes no permanent floor space and the mesh allows real sunlight UVB without the 65 to 70 percent attenuation of glass.
Buy this enclosure if you keep a basking species (bearded dragon, chameleon, tortoise) and want to give the animal real sunlight 1 to 3 times a week in good weather. Skip this enclosure if you need a permanent cage for a humid species, where the Exo Terra glass terrariums are the right pick.
Real sunlight UVB and why mesh matters
Real sunlight delivers UVB at intensities no commercial UVB bulb matches, and the only thing between an outdoor reptile and that sunlight is the mesh of the enclosure. The PVC coated polyester mesh attenuates UVB by less than 15 percent based on third party measurements, which means a 30 minute outdoor sunning session through the Explorarium delivers more UVB than several hours under a T5 HO indoor fixture.
For bearded dragons, chameleons, and tortoises, this matters because indoor UVB bulbs degrade over 6 to 12 months and indoor husbandry depends entirely on those bulbs being replaced on schedule. A weekly outdoor sunning session in good weather is the simplest way to backstop indoor UVB and most reptile vets recommend it for any keeper with safe outdoor space.
Quarantine and travel use cases
The collapsible design also makes the Explorarium the right choice for quarantine. New reptiles brought into a household need to be kept separate from existing animals for at least 30 to 90 days to prevent disease transmission, and most keepers do not want to dedicate a permanent glass terrarium to that task. The Explorarium folds flat between uses, deep cleans easily because the mesh and frame are not porous, and breaks down quickly for transport.
For vet visits and reptile expos, the same collapsible design carries the cage to the destination without disassembly. The cage rides in a car trunk in folded form, then unfolds at the destination in 5 to 10 minutes.
Build quality and what to expect
The steel frame and reinforced corners hold the cage square under the weight of live plants, feeder cups, and a mid sized reptile. Owners report frame durability over multiple years of regular use, with the most common failure point being the zipper on the front door if it is forced past obstructions. For most use cases, the cage lasts years with reasonable handling.
For more on how we evaluate reptile enclosures and other pet products, see our methodology page. For a permanent glass terrarium for humid species, the Exo Terra Glass Terrarium 12x12x18 is the standard pick.
Exo Terra Explorarium Large Mesh Enclosure vs. the competition
| Product | Our rating | Frame | Use | Humidity | Price | Verdict |
|---|---|---|---|---|---|---|
| Exo Terra Explorarium Large | ★★★★☆ 4.4 | Steel | Travel, outdoor | Low | $79 | Top Pick Mesh Enclosure |
| Zoo Med Reptibreeze 18x18x36 | ★★★★★ 4.5 | Aluminum | Permanent chameleon | Low | $99 | Editor's Choice Permanent Mesh |
| Zoo Med Reptibreeze 16x16x30 Medium | ★★★★★ 4.5 | Aluminum | Permanent chameleon | Low | $89 | Recommended Sub Adult |
| Exo Terra Glass Terrarium 18x18x24 | ★★★★★ 4.6 | Glass | Tropical species | High | $199 | Best for Humid Species |
Full specifications
| External dimensions | Approximately 18 x 18 x 36 inches large variant |
| Frame | Steel frame with reinforced corners |
| Mesh | Fine PVC coated polyester mesh |
| Doors | Front zipper door and top opening flap |
| Storage | Collapsible, folds flat with included carry bag |
| Recommended species | Sub adult chameleon, juvenile bearded dragon (sunning), travel, quarantine |
| Setup time | 5 to 10 minutes |
| Footprint | About 2.25 square feet large variant |
| Use environment | Indoor temporary, outdoor sunning, travel |
| Warranty | Limited manufacturer warranty per Exo Terra's listing |
Should you buy the Exo Terra Explorarium Large Mesh Enclosure?
The Exo Terra Explorarium Large is the collapsible mesh enclosure most chameleon and arboreal lizard keepers buy as a secondary cage for outdoor sunning, travel, or quarantine. The steel frame and reinforced corners hold the cage square under live plants and feeder cup weight, the full mesh construction allows real sunlight UVB without the screen attenuation of a glass terrarium, and the collapsible design folds flat for storage.
Frequently asked questions
Can I use the Explorarium as a permanent chameleon enclosure?+
It works for a sub adult chameleon temporarily, but the [Zoo Med Reptibreeze](/reviews/exo-terra-glass-12x12x18) aluminum frame mesh enclosure is the better permanent choice. The Reptibreeze frame is more rigid, the door hardware holds up better to daily servicing, and the larger 18 by 18 by 36 sizing is closer to the standard chameleon recommendation. The Explorarium's strength is the collapsible portability, not long term durability.
Will it hold humidity for a tree frog or dart frog?+
No. The full mesh construction is the opposite of what humid species need. Tree frogs and dart frogs need 70 to 100 percent humidity, and a mesh enclosure drops to ambient room humidity (30 to 50 percent in most homes) within minutes of misting. For humid species, a glass enclosure with a partially covered screen top is the right pick. The [Exo Terra Glass Terrarium 12x12x18](/reviews/exo-terra-glass-12x12x18) is the standard recommendation.
Is real sunlight UVB safe through the mesh?+
Yes, and that is the main use case. Real sunlight provides full spectrum UVB at intensity no commercial UVB bulb matches. The fine PVC coated polyester mesh attenuates UVB by less than 15 percent based on third party measurements, which is significantly better than the 65 to 70 percent attenuation of a glass terrarium. For a 30 to 60 minute outdoor sunning session, the Explorarium delivers real UVB to bearded dragons, juvenile chameleons, and tortoises.
Will crickets escape through the mesh?+
Some will. The mesh weave is fine but not cricket proof. Most adult crickets stay inside, but small juvenile crickets and pinhead crickets can escape through the weave. For feeding inside the Explorarium, use a cricket feeder cup or pre kill the crickets. For most outdoor sunning sessions, the animal is the focus and feeding happens back in the primary enclosure.
How does it pack down for travel?+
The frame collapses by twisting and folding, the mesh stays attached, and the entire cage folds into the included carry bag. Folded size is roughly 18 by 18 by 4 inches for the large variant. The cage fits in a car trunk or under most luggage compartments without disassembly.
📅 Update log
- May 9, 2026Initial review published. Comparison set includes Zoo Med Reptibreeze 18x18x36, Reptibreeze Medium, and Exo Terra glass 18x18x24.
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