Cosy and highly protective, the Ascent Pro 600 is crafted for cold-weather adventures across the UK and Scandinavia. Designed with a generous, wide fit, it offers a comfortable and restful night's sleep for the weary mountain wanderer. Packed with 600g of 650FP duck down, this sleeping bag provides ample warmth, while still allowing room to wear extra, bulkier layers should the temperatures take an unexpected plunge. Featuring a Pertex® Quantum Pro outer that resists both wind and water, combined with hydrophobic duck down, it stands up admirably to blustery winds, condensation, and damp environments – perfect for an exposed bivi ledge. Warm enough to tackle falling temperatures with ease, it serves as a highly versatile, three-season adventure sleeping bag. Constructed with trapezoid-shaped, boxwall baffles that neatly interlock, it encourages the down to loft fully, enhancing insulation and preventing the formation of cold spots. Each bag is hand-filled in the UK, ensuring the down is never compressed before use, thus preserving its loft and warmth for maximum comfort. The Ascent Pro features a ¾ length main zip, complete with a down-filled internal baffle and a 3D-shaped neck baffle, both carefully designed to minimise heat loss. An internal zipped pocket offers the perfect place to stash a headlamp within easy reach. Thanks to the angled foot box, sleepers can enjoy a natural and relaxed sleeping posture. Travelling with a partner or simply in need of more space? A left and a right zipped bag can be joined together to create a larger sleeping system. Features The 20D Pertex® Quantum Pro ripstop fabric (36 gsm) is finished with a fluorocarbon-free DWR for durable weather resistance. The lining is made from soft 20D recycled nylon (38 gsm) for comfort and sustainability. It is insulated with 650FP European duck down, treated with a Nikwax fluorocarbon-free hydrophobic finish (600g / 21.1oz). A trapezoidal boxwall construction with differential cut maximises loft and thermal efficiency. A 3-dimensional shaped neck collar is included to seal in body warmth effectively. The Pertex® Quantum Pro fabric is used in the neck baffle to manage moisture better. A YKK ¾ length main zip with a down-filled baffle helps trap warmth inside the bag. The YKK anti-snag zip insert and internal zip guard prevent fabric snags when adjusting the zip. An internal YKK zipped stash pocket provides secure storage for small essentials. The angled foot box allows for a more natural and relaxed sleeping position. Left and right-hand zip options allow two bags to be zipped together for extra space. A drawcord stuffsack is included for easy packing during expeditions. A zipped storage sack with a water-resistant base is provided for proper home storage. The outer shell is made from 100% polyamide with a polyurethane coating, and the lining uses 100% recycled polyamide. The wide mummy shape offers a spacious yet thermally efficient fit. Specifications Weight (Regular) 1190 g / 42.0 oz, (Long) 1255 g / 44.3 oz Insulation 650FP European Duck Down with Nikwax Fluorocarbon-Free Hydrophobic Finish (600 g / 21.1 oz) Rab Sleep Limit 19°F / -7°C Packed size 40 cm x 22 cm (15.7 in x 8.7 in)
