23Zero Onyx Triple X 1450 vs Gasell Adventure GC138

The 23Zero Onyx Triple X 1450 and the Gasell Adventure GC138 are both hardshell tents in the same part of the market, which makes them a genuine head-to-head rather than a comparison across categories. 23Zero and Gasell Adventure take noticeably different approaches to the same problem.

By the numbers, the 23Zero Onyx Triple X 1450 brings 98 kg, 2.78 m² of floor and sleeps 2. The Gasell Adventure GC138 counters with 89 kg, 2.54 m² of floor, 145 cm of headroom and sleeps 2.

The GC138 is 9 kg lighter at 89 kg against 98 kg, which on a factory roof rated for 68 to 75 kg is often the difference between a legal fit and a rack upgrade. Inside, the Onyx Triple X 1450 gives 2.78 m² of sleeping floor against 2.54 m², about 9 percent more, though both are rated for 2. Their list prices are within a few percent of each other, so price is unlikely to decide this one.

The Onyx Triple X 1450 uses oxide-coated aluminium extrusions with a honeycomb base; the GC138 uses aluminum. Canvas differs too: 320 gsm canvas with Light Suppression Technology (LST) against poly-cotton, 280 g/m2, PU-coated, 3000 mm water column (rain cover: 600D Oxford polyester, PU-coated, 3000 mm).