Horntools Themis 140 vs RoofBunk Adventurer

The Horntools Themis 140 and the RoofBunk Adventurer 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. Horntools and RoofBunk take noticeably different approaches to the same problem.

The Themis 140 is 10 kg lighter at 70 kg against 80 kg, which on a factory roof rated for 68 to 75 kg is often the difference between a legal fit and a rack upgrade. Floor area is close to identical at 2.97 m² and 3.05 m², so neither wins on sleeping room. Headroom separates them further: 145 cm in the Adventurer against 100 cm, which is the difference between sitting up to dress and doing it lying down. Setup is not close. The Adventurer opens as a clamshell in 30 seconds; the Themis 140 takes 3 minutes. Over a trip with a new campsite every night, that gap compounds. List prices are within $56 of each other, so price is unlikely to decide this one. Horntools also backs the Themis 140 for 5 years against 2.

They open differently: the Themis 140 is a pop-up and the Adventurer a clamshell. That is not cosmetic — it decides whether headroom is even across the tent or tapers towards one end, and how much of the roof the tent occupies when closed. The Themis 140 uses ABS (acrylonitrile butadiene styrene); the Adventurer uses powder-coated aluminium. Canvas differs too: cotton, linen, polyester with PU coating (water column 2000 mm) against 320gsm poly-cotton blend ripstop canvas body; 600D Oxford polyester rainfly. Closed, the Adventurer sits 9 cm lower on the roof — 21 cm against 30 cm — which is drag you carry on every mile you are not camping.