Sea to Summit Amplitude Down Sleeping Bag - AmIII Double

Sea to Summit Amplitude Down Sleeping Bag - AmIII Double stands out with a roomy ultra-wide double shape and lofty Ultra-Dry down insulation for comfortable nights in cold conditions. This sleeping bag is built for camping and hut overnights when extra space, soft feel and adjustable warmth matter. Multiple zips make it easy to fine-tune ventilation or open it out into a quilt-style setup. Thoughtful baffle design helps keep the down where it should be to reduce cold spots through the night.

• Ultra-wide double down sleeping bag with Ultra-Dry treatment for plush warmth on camp and hut trips
• Comfort-focused double rectangular design offers extra room for two sleepers
• RDS-certified goose down with 750+ cuin fill power for high loft insulation with ethical sourcing
• Three two-way zippers with six YKK sliders for quick temperature and ventilation control
• Zip layout also allows the bag to open up for quilt-style use
• Vertical chest baffles help prevent down shifting and reduce cold spots
• Side block baffles boost insulation along the edges
• Panelled foot box and 3D hood help keep the down from being compressed
• Includes removable adjustable webbing loops for attaching to a sleeping mat
• Includes compression sack and an internal valuables pocket

Technical Features
Temperature rating: Comfort −8 °C (17.6 °F), lower limit −15 °C (5 °F), extreme −36 °C (−32.8 °F)
Zippers: three two-way side zips with six YKK sliders
Convertible use: multiple zips for temperature adjustment or quilt-style use
Baffles: vertical chest baffles to reduce down migration and cold spots
Baffles: side block baffles for added insulation
Insulation: RDS 750+ loft Ultra-Dry down
Construction: panelled foot box and 3D hood to reduce down compression
Mat attachment: removable adjustable webbing loops to connect to a mat
Certifications: Responsible Down Standard (RDS)

Weight
1,780 kg

Dimensions
External dimensions: 205L x 160W cm
Packed dimensions: 50L x 23W cm
Compressed volume: 20 L
Compression sack size: L

Size and Fit
Max. user height: 183 cm
Internal girth: 326 cm chest, 319 cm hip, 282 cm foot
Fill ratio top/bottom: 60/40

Materials
Main material: 100% polyamide
Inner material: 100% polyamide
Insulation: 100% down
Shell: 30d nylon
Lining: 20d nylon