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Rab Ascent 900 Hydrophobic Down Sleeping Bag

Member‘s Card Price£229.00

Retail Price £290.00 Save 21%

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A super-warm, very comfortable, high performance down-filled sleeping bag.

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Product code: 15894065 / 059753

A super-warm, very comfortable, high performance down-filled sleeping bag.

Rab's Ascent range of sleeping bags are duck down filled performance sleeping bags designed for regular use - the Ascent 900 is the warmest, built for use in colder climates.

Made using durable and lightweight Pertex Microlight fabrics, they give you durable build and construction, with very effective warmth for bags of such low weight.

The Ascent 900's roomy semi-rectangular foot area gives you space to move without losing insulation, which is great for those who don't like the restriction of a mummy shaped bag. 

The Pertex Microlight* outer shell and inner lining is ultra-light and very densely woven, holding the goose down fill in place without obstructing the bag's breathability.

It comes with two storage sacks - a large storage/carry sack, and a compression stuff sack - giving you the option of compacting the bag down to conserve space in your kit, or keeping it uncompressed for long term storage, to preserve the down.

  • Rab® fluorocarbon free Hydrophobic Down developed in conjunction with Nikwax®
  • Pertex® Microlight inner and outer fabric
  • 650FP European Duck Down
  • Wide mummy shape
  • Proportionally assigned differential cut
  • Internal YKK 3 coil zipped stash pocket
  • Wide foot area for extended comfort
  • 3⁄4 length YKK 5 coil main zip
  • Left and right hand zipped bags will zip together
  • Anti snag zipper webbing tape
  • Internal collar and hood drawcord
  • Trapezoidal baffle chamber design
  • Angled foot box
  • Compression stuff sack, cotton storage sack
  • Weight: 1530g/54oz (+170g/6oz stuffsack) 
  • Hand filled in Derbyshire
24 x 45cm
Everyday Use, Expedition, Weekend
2 to 3 Season
Compression Sack, Draught Collar, Hood, Stuff Sack

This product qualifies for the following delivery methods

Standard Delivery (3-5 Days) (FREE)


Once despatched you will receive updates from the courier.

Express 2 Day Delivery (£5.95)


Express delivery takes 2 working days when order is placed before 1pm Monday-Friday. Once despatched you will receive updates from the courier.

Reserve and Collect (within an hour) (FREE)


We will notify you when your order is ready to collect.

Click and Collect (3-5 Days) (FREE)


You will be notified when your order is ready to collect.

Next Day Delivery (order by 6pm Mon - Fri) (£2.95)


Delivered by UK Mail. Remote areas may take longer, please click here for more info.

AM Delivery (£7.95)


Order by 8pm and get your item delivered to you by 12pm the next working day (Not available for NI, Channel Islands or Highlands)

Standard Large Delivery (3-5 Days) (FREE)


Standard Large Delivery (3-5 Days) (£200.00)


Bike Delivery (£4.95)


Bike delivery is £4.95. This applies to all bikes, and these orders are upgraded to a DHL courier service.

British Forces Post Office (BFPO) (FREE)


Delivery before 10:30am (£8.95)


Saturday Delivery (order by 6pm Friday) (£5.95)


Click and Collect Next Day (order by 6pm Mon - Fri) (£2.95)



Returning orders to us is easy. Whatever your reason, we offer a refund or exchange within 28 days of delivery or collection.

Ratings & Reviews

Overall Rating

4.14 out of 5
7 reviews
Write a review
4.14 out of 5

So warm!

If what you are looking for is comfort and warmth this is a fantastic bag. Spacious, soft and incredibly warm, don't need to wear layers when using this bag. But at 1.6kg it isn't the lightest.

4.14 out of 5

Fantastic bag, lots of...

Fantastic bag, lots of room for side sleepers, good quality and good warmth to weight ratio for the price. Look forward to using it in earnest top of lake district hills at end of October.
I spent weeks looking through hundreds of possible winter bags but kept coming back to the Rab as its unbeatable for the price/quality, also nice to be buying British for once.

4.14 out of 5

Extremely good and very...

Extremely good and very warm. Little snug around the knees

4.14 out of 5

Sleeping bag that arrived...

Sleeping bag that arrived had been previously used, ripped internally in over 5 places and shoddily repaired. Returned, Still awaiting refund.

4.14 out of 5

Excellent. Warm and cozy...

Excellent. Warm and cozy - such a comfortable night's sleep. So far I've only tried it out in Scotland's summer and it was almost too warm! Looking forward to having this through the late fall and winter, as it will be a dramatic improvement over my old two season bag.

Doesn't pack down particularly small, but worth it for the warmth.

4.14 out of 5

Superb Bag

After 5 nights use, I can only describe it as a very warm and comfortable bag, I just can’t fault it.

4.14 out of 5

Unbelievably Warm!

I bought and used this sleeping bag for a trip up Kilimanjaro. Even at base camp with temps hitting -10/15C I was sleeping in just boxers and had to leave the zip partially undone so I wasn’t too hot!

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