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Images: Decathlon Simond and its retailers. Used for product identification.

Decathlon Simond

Decathlon Simond MT900 0 °C Down

0 °C ISO comfort under a kilo, for spring and autumn camps in the hills.

Weight
930 g
Comfort
0 °Climit -5 °C
Packed
11 L uncompressed

Best price found

£169.99

at Decathlon · Price from Decathlon's UK search listing

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Prices checked 31 October 2026. We may earn a commission on these links.

  • 800 FP down
  • Draught collar
  • Two-way zip

Specifications

Weight
930 g
Packed size
11 L uncompressed
Comfort
Comfort 0 °C / limit -5 °C
Fill
800 FP down, 495 g fill
Shell & construction
100% polyamide 20 g/m², 10 denier with 30 denier ripstop; Body-shaped mummy, anatomical hood, ergonomic…
Rating Standard
ISO 23537 rating
Fill Note
495 g in size L: 260 g 800 cuin top + 235 g 700 cuin underside
Season
3-season
Zip
3/4-length YKK two-way zip with anti-jamming mechanism…
Manufacturer page →

Pros & cons

  • Published fill weight, fill power and independent lab rating at this price
  • Generous ~72 cm shoulder width for a mummy, full-length draught baffle
  • Heavier than premium down bags of similar rating
  • Needs an R4.8 mat to reach its rating; no neck baffle reported

Sources for this product

  1. 1Decathlon UK listing
  2. 2Decathlon Canada page, same ID 8882708
  3. 3Zelpio review, 29 Sep 2026

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