CRITERION Quantum 350 is an extremely versatile lightweight sleeping bag and is our most popular bag. designed for 3 season trekking, summer alpinism, ultralight hiking and adventure racing. With a comfort temperature rating of -6°C, this sleeping bag is ideal for camping in the UK throughout most of the year. Additionally, it weighs just 695 grams, making it lightweight and easy to carry, which helps reduce your overall pack weight. It is made using a Pertex Quantum (35gms/m²) ripstop shell filled with 350g of 850 FP Polish Goose down. Trapezoid construction eliminates cold spots enabling a comfortable night’s sleep. A DWR treatment of the shell helps protect the down from any dampness that may occur in your tent, from condensation or wet gear. Pack size is 12 x 12 x 27 cm (when in its stuff sack) which take up hardly any room in your rucksack. Suggested Outdoor Activities The Criterion Quantum 350 sleeping bag is perfect for a wide range of outdoor adventures, including: Ultralight hiking Three-season trekking Summer alpinism Micro-adventures Endurance racing, adventure racing, and mountain marathons Cycle touring Since night-time temperatures during these activities can often drop a few degrees below freezing, it’s important to have a sleeping bag that provides reliable warmth. With a comfort temperature of -6°C, the Criterion Quantum 350 ensures you stay warm in colder conditions without overheating in milder weather. Furthermore, its lightweight design – just 695 grams – allows you to carry it comfortably in your rucksack, making it an excellent choice for those who prioritize both warmth and portability. Features Specific To The Criterion Quantum 350 Lightweight Sleeping Bag 350gms of 95:5 Polish Goose Down insulation with 850 fill power – collected in accordance with DOWNPASS ethical standards Fill Volume: 9917cubic inches Weighs: 695g Packs down to 12 x 12 x 27 cm Top side construction: Trapezoid Comfort Temp. -6°C Temperature rating confirmed by independent lab testing at Leeds University Features Common To The Criterion Quantum Range 95:5 Polish Goose Down insulation with 850 fill power – collected in accordance with DOWNPASS ethical standards Pertex Quantum Ripstop Shell – 35gms/m², with DWR treatment Insulated and integrated Zip and Neck Baffle Length: 217cm Width Shoulders / Foot (cm): 75/50 Max User Height 6′ 1″ (185cm) Staying warm is only half the challenge on overnight adventures. For safe movement and navigation in the dark, pair your sleeping system with the powerful SILVA Free 1200 S headlamp. And if you need a lightweight shelter to go with your bag, check out the GeerTop Plume Bivy II Tent.
