MSR WindPro II

How much it adds to your pack. 4: A bit below average.

MSR gives a minimum weight of 0.19 kg (Ultralight Outdoor Gear lists 187 g, Needle Sports 190 g), in the 180-299 g band. The windscreen and heat reflector (82 g), canister stand (12 g) and bag (24 g) bring the full kit to about 310 g.

How much room it takes in your rucksack. 3: Below average. Fine for some trips, not others.

MSR gives the dimensions as 7.6 x 10.2 x 15.2 cm, worked as a box: 7.6 x 10.2 x 15.2 = 1,178 cm3, about 1.18 L, in the 0.6-1.59 L band. MSR also says the stove fits in a one-litre pot.

How fast the maker says it boils 1 litre in still air. Wind slows every stove: see Wind performance. 7: Better than most.

MSR gives 3.6 minutes (216 s) for 1 litre with IsoPro fuel, in the 190-229 s band. Reviewers were slower: OutdoorGearLab timed 5 min 10 s in still air.

How well it keeps boiling in a breeze, as sold, without an extra windshield. 9: Among the best you can buy for this.

OutdoorGearLab timed 1 litre in still air and in a fan breeze of 3-6 km/h with the stove's own windscreen: 5 min 10 s and 6 min 5 s, so the breeze added 55 s, about 18%, under the 30% line (5); its verdict also lists not as windproof as other stoves as a drawback, but says it beats every small canister stove in wind. PopUpBackpacker, comparing it side by side in a breeze with a Snow Peak GigaPower and a MSR PocketRocket, says the flame has almost no turbulence and it is in a completely different class (5). TreeLineBackpacker says it keeps burning when other stoves blow out and that the windscreen lets it work in strong gusts (4). Scores 5, 5, 4: average 4.7 out of 5, so 9 out of 10.