Mountain Hardwear Phantom Flame 15F/-9C Long (2018)

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The Mountain Hardwear Phantom Flame is a compressible, super-lightweight down sleeping bag ideal for gram counting backpackers, and climbers.

Filled with Q.Shield® DOWN 800 the bag is designed to maintain heat and maximum loft in damp conditions. The almost translucent 10D fabric has a soft hand and is exceptionally lightweight, great for backpacking and hiking.


  • QShield® DOWN 800-fill has an advanced treatment applied that resists heat robbing moisture and retains maximum loft in damp conditions
  • Performance mummy is cut snug, for maximum warmth and minimum weight
  • Tight 5" baffle spacing maximizes loft
  • Lightweight but durable two-way #5 zipper for easy entry and exit
  • Down-filled face gasket comfortably blocks drafts at the hood opening
  • Six-chamber hood design maintains even loft around head for consistent warmth
  • Ergonomic draft collar blocks the escape of heated air from inside the bag Two drawcords can snug down as needed to secure the collar
  • Insulated draft tube with anti-snag panel prevents cold spots along zipper
  • Comfort footbox follows natural foot position for maximum warmth and comfort
  • Single-handed drawcords simplify adjustments
  • Nylon compression sack and mesh storage sack included


  • Fabric Body: 10D Bright Filament Cire Plain Weave 26 g/m²
  • Q.Shield™ DOWN 800-fill RDS Cert/Fluorine Free (Hydrophobic down)
  • RDS Certified Down


      • Compressed Size: 19 x 34cm
      • Max User Length: 198 cm
      • Inside Length Long: 198 cm
      • Hip Girth Long: 142 cm
      • Foot Girth Long: 102 cm
      • Shoulder Girth Long: 150 cm
      • Fill Power: 800 European Goose Down
      • Insulation: QShield™ DOWN 800-fill RDS Cert/Fluorine Free
      • EN Rating: Extreme: -26°C (-18°F)
      • EN Rating: T-LIMIT: 15 F / -9 C
      • EN Rating: T-COMFORT: 24 F / -4 C
      • Bag Fill Weight: 624g
      • Weight: 1072 g

        Customer Reviews

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        • Kilimanjaro
        Catherine H.
        United Kingdom United Kingdom

        Incredibly warm sleeping bag!

        The sleeping bag was comfortable and kept me warm to very cold temperatures on Kilimanjaro.

        vincent d.

        Excellent achat

        Je suis très agréablement surpris de la rapidité d'envoi, du suivi de colis et de l'efficacité en général. Le sac de couchage est absolument parfait. Testé sur le kingstrail en Laponie pendant 6jours. Merci encore

        Erwan G.

        Très satisfait

        Commande traitée immédiatement, colis bien emballé et reçu dans un délai très court. Le sac correspond parfaitement à la description et à mes attentes. A tester sur le terrain.

        William B.
        United Kingdom

        Like all Mountain Hardwear

        I have been very impressed so far in its quality of build as it has so far not shown the effects of escaping down, the size long was also great choice as I am 6 feet and it allows me to hunker down on colder nights whilst providing enough room to move.