Rab Ascent 300 Down Sleeping Bag (1C)

The Ascent 300 is a versatile summer sleeping bag designed with a spacious, wide mummy shape for added comfort. It is filled with 300g of 650FP duck down and offers ample room for wearing additional layers, making it ideal for summer climbing excursions or bothy-based adventures in mild weather conditions.

The sleeping bag is crafted from lightweight and durable recycled Pertex® Quantum outer fabric and recycled nylon lining, ensuring a sustainable and robust design. Trapezoid-shaped, boxwall baffles are incorporated, neatly stacking together to allow the hydrophobic duck down to loft fully while minimising cold spots. The down filling is hand-filled in the UK and has never been compressed before use, preserving its loft and thermal performance.

A generous mummy fit, combined with a wide foot box, provides a spacious and cosy sleeping experience. A close-fitting neck baffle is included to retain warmth when temperatures drop. The ¾ length main zip is equipped with a down-filled baffle to prevent draughts and maintain heat.

An internal zipped stash pocket is designed to securely hold essentials such as a phone or headlamp.A cotton storage sack and a compression stuff sack are provided, ensuring a compact pack size and protection during transport.For added versatility, left and right-zipped versions of the sleeping bag can be joined together, offering a double sleeping space or compatibility with a partner’s bag.

Features

• The outer fabric is made of 30D recycled Pertex® Quantum (50gsm) with a fluorocarbon-free DWR coating.
• The lining is constructed from 20D recycled nylon (38gsm).
• The insulation consists of 650FP European duck down with a Nikwax fluorocarbon-free hydrophobic finish (300g / 10.6oz).
• The baffle construction features a trapezoidal boxwall design with a differential cut to enhance loft and warmth.
• The three-dimensional neck collar is designed to seal in warmth.
• The YKK ¾ length main zip is complemented by a down-filled baffle, internal anti-snag zip guard, and anti-snag zip insert.
• The angled foot box is designed to provide a relaxed sleeping posture.
• The left and right-hand bags are compatible and can be zipped together for added versatility.
• The sleeping bag includes a zipped storage sack with a water-resistant base for home use and a drawcord stuff sack for travel.
• The materials include a 100% recycled polyamide outer and lining.
• The insulation uses 650FP RDS-certified European duck down with a fluorocarbon-free hydrophobic finish.
• The wide mummy shape ensures maximum comfort during use.
  
  

Sustainability Features

• Fluorocarbon (PFAS) free fabric
• Fluorocarbon (PFAS) free product
• Greater than 50% recycled materials
• Made with renewable energy

Specifications

Size Guide

Technology

Pertex® Quantum

A lightweight and soft windproof fabric designed to promote full lofting of insulation. Compact and protective, it is perfectly suited for mountain pursuits.

Video