Performance
The patented double windshield unit is the real story—outer shield blocks wind, inner shield allows air for combustion, and the flame stays locked in place. At 2.3kW output, it boils water fast and handles heavy cookware without flinching. The 10kg weight capacity means you can drop a Dutch oven on it and cook real meals, not just freeze-dried packets. Piezoelectric ignition fires up instantly, and the adjustable flame control runs smooth from simmer to full blast. Aluminum legs are tough and stable, and the compact 286 x 193 x 122mm footprint fits into camp setups without dominating space. Runs on standard Iwatani cassette gas for around 102 minutes per canister.
Pros
- Double windshield system keeps flames stable in harsh wind
- 2.3kW output handles serious cooking and heavy cookware
- 10kg weight capacity—Dutch oven and cast iron compatible
- Compact size ideal for solo or small group camping
- Magnetic cartridge lock is secure and easy to operate
- Includes carrying case for transport and storage
- Piezoelectric ignition for reliable starts
- Made in Japan with durable construction
Cons
- At 1.6kg body weight (2.5kg with case), it's not ultralight
- Requires Iwatani cassette gas canisters (standard but not universal)
- Not ideal for extreme wind conditions despite windshield
Specs
- Weight: 1.6kg body / 2.5kg with carrying case
- Dimensions: 286 x 193 x 122mm
- Case Dimensions: 320 x 252 x 135mm
- Heat Output: 2.3kW (2,000 kcal/h)
- Weight Capacity: 10kg
- Gas Consumption: Approx. 169g/h
- Burn Time: Approx. 102 minutes per canister
- Material: Steel plate body, enamel steel drip pan and grate, stainless steel burner head, aluminum die-cast legs
- Ignition: Piezoelectric
- Fuel: Iwatani cassette gas (CB-250-OR or compatible)
- Safety Features: Pressure sensor, magnetic cartridge lock
- Compatible Cookware: Pots up to 20cm top diameter (11cm minimum bottom diameter)
- Colors: Black, Olive Green
- Made in: Japan
Final Thoughts
The Iwatani Tough Maru Jr. is a wind-resistant workhorse built for campers who want to cook real food, not just boil water. The double windshield system keeps flames steady when the weather turns nasty, and the 10kg capacity means you're not limited to lightweight pots—bring the Dutch oven. Compact enough for solo trips but powerful enough for group cooking, it's made in Japan with the kind of build quality that lasts. If you're tired of fighting wind with flimsy stoves and want something that just works, this is it.
More Precision. More Function.
Every tool we review moves with purpose. Sharp, minimal, built to last — gear that earns its place in your kit. No trends, no noise. Just precision instruments for those who understand that less is more, and what you carry defines how you move.
