The Paiju is a seriously warm bag with Pertex Quantum Air fabric providing a water-resistant and breathable outer with improved air permeability; Offers protection from wind and improves the efficiency of insulation for 4-season use.
Marmot says:
When the temps are going down, you need gear that steps up. Ready to perform all year round, rain or shine, bring the Paiju -5° Sleeping Bag on your next overnight camping adventure. The water-resistant and breathable Pertex Quantum® shell will keep you dry and comfortable, while the 800-fill-power-down insulation ensures warmth on chilly overnights. Smooth, curved baffles help keep the fill in place, while the cinchable draft collar limits heat loss. Tuck small items into the internal stash pocket. Time to head home? Stuff it into the included storage sack.
Marmot's Paiju -5 Down Sleeping Bag is designed to take on the harsh conditions you'd expect to encounter in the winter. From the huge 1170g worth of 800+ Fill Power Down to the specially selected, weather resistant outer fabric, right through to the waterproof thread on the seams the Paiju is ready for the worst. It doesn't pack down to a tiny size but when you get in the bag you appreciate why. It quickly allows the down to loft and is a warmer and more comfortable for it.
You can cinch the draught collar and hood to hide inside the bag and escape from the cold conditions. The durable 20D Quantum Air fabric has a quality feel to it and resists signs of wear with ease. The baffle design on the Marmot bags is amazingly effective and the Paiju is no different. It certainly isn't the lightest weight sleeping bag at this -20°C temperature rating but is certainly feels tougher and more durable than many lighter bags. Having used this in tents, bothies and under tarps I think it's worth the weight.
Pertex Quantum® Air water-resistant and breathable fabric features improved air permeability; Offers protection from wind and improves the efficiency of insulation for 4-season use
Water-resistant Down Defender provides lightweight warmth and an extra level of moisture protection and retains critical loft of the 800-fill-power-down insulation; Waterproof thread prevents moisture from coming through seams
Smooth, curved baffles reduce down shifting; Cinchable draft collar for extra warmth
Full-length locking YKK two-way zipper with zip-guard slider
Seam-taped roll-top stuff sack for easy access and transport