Simond
Simond MT900 1-person ultra-light tarp tent (also sold as Forclaz MT900)
Where it fits
- Also works for
- Bikepacking, Backpacking and wild camping
- Not for
- Winter mountain
Why these labels
- Bikepacking: Light and short: 0.9 kg, packs to 38 cm
- Backpacking and wild camping: Light to carry: 0.9 kg
- Winter mountain: 3-season rating, not built for winter storms
From the maker's stated use and the published specs.
- Summer wild camp: 8/10 UK, roughly May to September, nights above about 8 °C, sheltered pitches.
- Three-season hills: 8/10 UK hills in spring and autumn. Wind, rain, and nights near freezing.
- Winter camp: 4/10 UK winter or high ground. Below freezing, strong wind, possibly snow. Capped at 4: needs the maker's 4-season rating.
- Weight: 9/10 How much it adds to your pack, compared with the whole market.
Solo walkers who already carry trekking poles and want a very light, very small shelter on a budget
- Sleeps
- 1
- Seasons
- 3-season
- Min. weight
- 920 g
- Flysheet
- 2,000 mm
- Inner length
- 225 cm
Packed size 2.98 L, 38 cm long and 10 cm across Compare with a 2-litre bottle
A bit longer than a 2-litre bottle and about as wide as one. Drawn to scale.
Where to buy
Decathlon UK £129.99 In stock. Delivery from £2.99.
View at shop: Decathlon UKPrices checked 8 Nov 2026 on each shop's own page; shops can change them. We earn no commission on these links; shops are listed by price. More
Our ratings (out of 10)
1 to 10, compared with the whole market. Each says what it's based on. How we score
Weight
From maker's figures 9/10How much it adds to your pack. This is the whole tent: two people sharing can split it. 9: Among the best you can buy for this.
920 g (tent, pegs, guylines, 2 short alu poles and bags; your own trekking poles not included) is under 1.0 kg.
Rain protection
From maker's figures 7/10How well it keeps out heavy, long rain. 7: Better than most.
Flysheet 2,000 mm sits in the 2,000–2,999 band; floor is 3,000 mm so no point is taken off.
Wind
From reviews 7/10How steady it stays in strong wind on open ground. 7: Better than most.
Advnture rates it better in wind than its price suggests, but I-Trekkings only tested to about 40 km/h and warns the straight back wall is weak in wind plus rain, and several Decathlon buyers report loud flapping or the fly blowing against the inner. Maker's own 70 km/h tunnel test is not counted.
Space
From maker's figures 5/10Room to lie, sit up and keep kit inside. 5: Does the job. Average for wild-camping gear.
Decathlon UK publishes a 225 cm bedroom tapering from 60 cm at the head to 50 cm at the feet: 225 x 55 (average width) = 12,375 cm², or 1.24 m² for one person, in the 1.15–1.34 band.
Packed size
From maker's figures 9/10How much room it takes in your rucksack. 9: Among the best you can buy for this.
Packs to 38 x 10 x 10 cm (two sides equal, so a stuff-sack cylinder): 3.1416 x 5 x 5 x 38 = 2,985 cm³, so about 3.0 L (Decathlon quotes a 2.5 L cover), under 4 L.
What reviewers say (out of 10)
Ratings marked * are from reviews and are not part of the trip score. They are reviewers' scores, not our own measurements. How we score
Pitching*
Reviewers' average 8/10How quickly and easily one person can pitch it, including in wind and rain.
4 reviews on pitching, e.g. "Easy to pitch, a cinch to pull drum tight and performing well in wind or rain".
Condensation*
Estimate: only 2 reviews about condensation (fewer than the 3 we need, so never above 8) 6/10How dry it stays inside on still, damp nights; higher is drier.
2 reviews on condensation, e.g. "il m’est arrivé à deux reprises d’avoir un tapis de sol légèrement humide à l’intérieur".
Durability*
Estimate: only 1 review about durability (fewer than the 3 we need, so never above 8) 6/10How well the fabric, poles, zips and seams hold up over seasons of use.
1 review on durability, e.g. "après deux utilisations voit sa fermeture se casser".
In short
Good for
- Solo walkers who already carry trekking poles and want a very light, very small shelter on a budget
- Spring to autumn wild camps and long-distance trails in mild weather
- Tall walkers: the 225 cm inner is longer than most one-person tents
Strengths
- Inner and flysheet are joined, so it goes up in one go, even in rain
- Roomy porch for a rucksack and boots, and you can sit up inside
- Taped seams and a 3,000 mm floor; spare flysheet and inner are sold separately if something tears
- Decathlon buyers report 100+ nights (one 187 nights over 5,000 km) with taped seams intact
Weaknesses
- Needs two trekking poles to stand up; it is not free-standing and needs pegs in soft enough ground
- Narrow inside (60 cm at the head, 50 cm at the feet): wide mats and broad shoulders will be tight
- Straight back wall can take wind-driven rain; if the foot guyline is slack the flysheet touches the inner and it can get wet (two reviewers and two buyers report this)
- Some Decathlon buyers say the fly flaps loudly in wind and blows against the inner
- Single one-way porch zip, and the all-white fabric is easy to spot, dirties and does not block bright moonlight
- Three-season only; Decathlon warns against leaving it in strong sun, and Advnture found it drew lots of insects when lit inside
- No independent long-term test: durability rests on two short tests and Decathlon buyers, two of whom say the floor is thin and use an extra groundsheet
Sources
We haven't tested this ourselves. Every score comes from these specs, tests and reviews.
ShowHide sources (5)
- Decathlon UK: One-person trekking ultra-light and ultra-compact tarp tent MT900 (specifications)
- Advnture: Forclaz MT900 Minimal Editions trekking pole tarp tent review (1-person)
- I-Trekkings: Test Tente Tarp Forclaz MT900 1 place (French, bivouacs on the GR10 and in Belledonne)
- Le Banquier Randonneur: Tente Tarp de Trekking MT900 Decathlon 1 place (French, 20 nights, bought by reviewer)
- Decathlon UK customer reviews: MT900 1-person tarp tent (184 reviews, about 4.3 out of 5; we read 80, pages 1-8, 5 from the UK; old Forclaz and newer Simond-era buyers mixed)