Lost Coast 15

Expand your campsite horizons with the packable comfort of the Marmot Lost Coast Down 15° Sleeping Bag. Designed for backpacking or car camping alike, this lightweight down mummy bag offers the perfect balance of warmth, durability, and eco-conscious materials. Its 600-fill-power down provides reliable insulation, while a recycled shell and liner deliver sustainable toughness for years of adventure.

Features:

• RDS-certified 600-fill-power down with Down Defender treatment for improved water resistance in damp conditions
• 100% post-consumer recycled polyester shell and lining minimize environmental impact
• Main zipper with anti-snag slider for smooth operation and easy ventilation
• Anatomically designed footbox with wrap-around construction enhances warmth and comfort
• Draft collar helps prevent heat loss on cold nights
• Internal stash pocket keeps small items secure and within reach
• ISO-tested for accurate and dependable temperature ratings
• Includes both a stuff sack and a storage bag for convenient packing and long-term care

Specifications — Regular Length:

• Temperature Rating: 15°F / -9°C
• Tested Comfort: 24°F / -4°C
• Tested Limit: 12°F / -11°C
• Fill Type: 600-fill-power down (RDS-certified, Down Defender treated)
• Shell Fabric: 100% Recycled Polyester Ripstop
• Liner Fabric: 100% Recycled Polyester
• Shape: Mummy
• Zipper Location: Left zip
• Shoulder Girth: 65 in (164 cm)
• Hip Girth: 62.6 in (159 cm)
• Footbox Size: 50 in (127 cm)
• Stuff Sack Size: 15.0 x 7.9 in (38 x 20 cm)
• Weight: 2 lbs 15.7 oz (1,353 g)
• Fits: Sleepers up to 6 ft (183 cm)
• Style Number: M15415
• Includes: Stuff sack and storage sack

Specifications — Long Length:

• Temperature Rating: 15°F / -9°C
• Tested Comfort: 24°F / -4°C
• Tested Limit: 12°F / -11°C
• Fill Type: 600-fill-power down (RDS-certified, Down Defender treated)
• Shell Fabric: 100% Recycled Polyester Ripstop
• Liner Fabric: 100% Recycled Polyester
• Shape: Mummy
• Zipper Location: Left zip
• Shoulder Girth: 67 in (169 cm)
• Hip Girth: 64.6 in (164 cm)
• Footbox Size: 52 in (132 cm)
• Stuff Sack Size: 15.0 x 7.9 in (38 x 20 cm)
• Weight: 3 lbs 3.1 oz (1,449 g)
• Fits: Sleepers up to 6 ft 6 in (198 cm)
• Style Number: M15416
• Includes: Stuff sack and storage sack