Made For

Quantum Top Bag AR:
Alpine climbing
Fast & light

Quantum 250, 400
& Women's 400:
Alpine climbing
Trek & travel
Mountain walking
Fast & light

Quantum 600 &
Women's 600:

Alpine climbing
Trek & travel
Mountain walking

Quantum 800:
Altitude & polar
Alpine climbing
Trek & travel
Mountain walking

Fabric & Technical

Reviews

Quantum 400 "An astonishingly light bag for the warmth"
Best buy sleeping bag TGO magazine April 2004

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Quantum 200
"As far as I'm concerned it's a near-perfect summer bag, being ultralight, very low bulk and astonishingly warm for the weight."
Quantum 600 Endurance 'Chosen by Steve Perry for the Winter 284 challenge'

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"The Rab Top Bag AR is an excellent value ultralight sleeping bag, compared to the competition." Overall Rating - Recommended June 2008 Backpacking Light Magazine. USA

The Quantum Series

Quantum bags are designed to be the lightest for todays weight conscious adventurers. Use of Pertex® Quantum fabric and 750+ fill power down ensures the optimum warmth to weight ratio, in efficient designs to meet the needs of backpackers, Alpine climbers, ski and cycle tourers.

weight comfort dimensions packsize   col
Quantum topbag AR 550g N/A
195 x 75cm 24 x 11cm   Grey
Quantum 250 650g -2°C 210 x 75cm 24 x 11cm   Red
Quantum 400 900g -3°C 215 x 75cm 25 x 15cm   Blue
Quantum 600 1100g -15°C 215 x 75cm 30 x 18cm   Black
Quantum 800 1300g -23°C 215 x 75cm 35 x 21cm   Red
Quantum 400 women's 850g -5°C 195 x 75cm 25 x 15cm   Blue
Quantum 600 women's 1050g -17°C 195 x 75cm 30 x 18cm   Black

Weight:See chart above

Colours: Grey, Blue, Black, Red, See chart above for specific colours

Sizes:See chart above



  • The Quantum range of bags comes in 3 designs, dependant on fill weight and intended usage
  • The Quantum Top Bag AR has 200g of down on top and round the foot plug and only a single layer of Quantum fabric on the base. It has a sleeping mat sleeve in the base which will fit a 3/4 or full length mat. The sleeping bag is designed to be used on adventure races, mountain marathons and minimalist backpacking trips in conjunction with an insulating pad that is best cut to the shape of the bag (or for the hard core use bubble wrap!)
  • The Quantum 250 is an ultra lightweight down bag designed for summer backpacking, fast Alpine ascents and mountain marathons

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Colour Options

The lightest downproof, windproof, breathable fabric