The premium sustainable choice made with 100% recycled materials and concertina style construction trapping air to boost loft and warmth. Ideal for spring camping backpacking and mountain trekking especially in changeable weather. Features Base: 60gsm Recycled Stratus Synthetic Sheet Insulation in a dual layer construction Dual layer concertina blanket construction on upper for improved loft and warmth Offset localised quilting to reduce cold transmision Adjustable hood closure system with elasticated drawcord and cordlock adjuster Close fitting adjustable neck baffle design for improved warmth retension YKK 3/4 length main zip with synthetic insulated zip baffle to trap warmth Anti snag internal zip guard Compression stuffsack included Outer: 100% recycled polyester. Lining: 100% recycled polyester Mummy shape Materials Lining: 20D Atmos™ recycled polyester ripstop fabric 38gsm with fluorocarbon free DWR Upper: 100gsm Recycled Stratus Synthetic Sheet Insulation in a dual layer construction SHELL: 100% Woven Nylon FILLING: 100% Polyester Specification Reg 980g/34.6oz XL 1050g/37oz WZ 1105g/39oz WR 1060g/37.4oz Internal Shoulder Circumference: Reg 150cm/59.1 inch XL 152cm/59.8inch WZ 172cm/67.7 inch WR 170cm/66.9 inch Packed Size: Reg 35X20cm/13.8x7.9 inch XL 35X20cm/13.8x7.9 inch WZ 35X20cm/13.8x7.9 inch WR 35X20cm/13.8x7.9 inch ISO EN: Comfort: 4°C 39°F Limit: -1°C 30°F Extreme: -17°C 1°F Rab Sleep Limit: -2°C 30°F