The Ascent Pro 800 from Rab is a versatile extreme-cold down that offers reliable thermal protection in extreme negative temperatures. Designed specifically for regular bivouac and mountain hiking, it is ideal for those looking for a comfortable, spacious and lightweight performance down sleeping bag. Made from water-repellent Pertex® Quantum Pro and filled with 800g of 650 cuin duck down, it's the ideal bag for those investing in their first down sleeping bag for cold winter conditions. It is a warm sleeping bag with enough space to allow you to wear extra bulky layers of clothing inside if you use it in very cold weather. With its wind and water resistant Pertex® Quantum Pro exterior and its hydrophobic duck down, it perfectly protects you from squalls, condensation and humidity, ideal for an exposed bivouac. Warm enough to cope with plummeting temperatures, it's an ideal winter sleeping bag for a versatile adventure. The trapezoidal baffle allows the hydrophobic down to expand completely to eliminate cold spots and optimize warmth. Hand-filled in the UK, all of our down sleeping bags benefit from never having been compressed before use, retaining their warmth and loft. The Ascent Pro features a ¾ length zipper with an internal down flap and 3D collar, both designed to retain heat. Its interior zipped pocket is ideal for storing your flashlight within easy reach, and with its angled foot compartment you can be sure of a comfortable sleeping position.

Characteristics of the Rab Ascent Pro 800 extreme cold down:

• Temperatures: Standard EN13537
• Comfort temperature Rab: - 15° C Temperature at which a person can sleep comfortably for 8 hours

•  Maximum user height: 185 cm 

•  Shoulder width: 85 cm 

•  Hip width: 67 cm 

•  Foot width: 54 cm 

•  Weight: 1430g 

•  Pertex® Quantum Pro 20D ripstop fabric (36 g/m2) with fluorocarbon-free DWR 

•  Ethically sourced European duck down with fluorocarbon-free Nikwax hydrophobic finish (800g) 

•  Large mummy shape 

•  Trapezoidal partition tiles with differential cut optimize volume and heat

• Rigid 3D collar to retain heat
• Pertex Quantum Pro flap at the neck to better manage moisture

•  3/4 length YKK main zipper and down-filled compartments to lock in heat 

•  Large foot area for greater comfort 

•  YKK 5 length spring loaded main zipper with night puller

• Internal zippered pocket with 3 YKK springs

•  Zippered anti-snag protection 

•  Internal collar and drawstring 

•  Compression bag 

•  Drawstring storage bag included

• Package size: 24 x 45cm
• The Ascent line is designed for campers, backpackers looking for adventure, or those who like to spend the night in a shelter. With its intelligent structure to optimize heat and its generous volume, it guarantees a good night's sleep.