Tri-Lateral construction - an independently 'floating' layer of insulation for wrap around warmth and fewer cold spots4T synthetic insulation - utilises a channel structure to trap warm air, resulting in an unrivalled warmth to weight ratio20D Polair Active fabric - durable, soft and compressible shellThermal-Reverb technology - aluminised layer reflects body heat back for increased efficiencyThermal Embrace System - semi elasticated thread inserts cause the sleeping bag to sit closer to the body for extra warmth retentionInsulated adjustable shoulder baffle3D hood with cord closureArrow footboxInsulated zip baffleTwo way auto-lock zip system - with zip guard for ease of useInternal pocketOmega shaping - zips and seams positioned in the lower section of the sleeping bag for added comfort4-strap compression stuff sackPerformance: 2 seasonComfort rating: -1 degreesExtreme usage: -24 degreesPack size: 27 x 24cmWeight: 1.35kg