Rab Ultrasphere 4.5 Sleep Mat (370g)

Rated 5.0 out of 5
Based on 11 reviews
Regular price $329.95 Sale price $279.00
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Size
Length

From bikepacking through mountain ranges to multi-day trail running, the award-winning Ultrasphere 4.5 offers peerless warmth for when you can’t compromise on weight.

Weight : Regular 370g, Long Wide 505g
 
Packed Size : Regular 15cm X 9cm, Long Wide 19cm X 9cm
 
R-Value : 4.3
 
Repair Kit Included
 

Activities

We recommend using this for:

  • Expedition
  • Fast & Light Adventures
  • Mountaineering
  • Trekking
 

When both warmth and low weight are crucial, the award-winning Ultrasphere 4.5 is the ultimate packable, featherlight air mat. Its ground-breaking design includes two layers of heat-reflective TILT, which reduce radiant heat loss, and offset air chambers that trap heat within the construction, allowing you to recharge comfortably without the need for high-volume insulation. Combined with a soft, exceptionally lightweight fabric, the mat’s weight-saving construction makes it ideal for bikepacking, thru-hiking, and multi-day mountain running.

With a comfortable tapered mummy shape that eliminates unnecessary bulk, the mat is thick and supportive, so that you can catch vital rest and restore the energy reserves needed for your action-fuelled days on the trail. When it’s time to pitch for the night, the low-profile two-way valve and inflation sack make camp setup quick and easy.

Featuring an included repair kit and unrivalled warmth-to-weight ratio, the Ultrasphere 4.5 is honed for fast-paced exploring in demanding mountain conditions.

  • Weight:Regular 370g / 13.1oz. Long Wide 505g / 17.8oz
  • Main Fabric:20D Recycled Polyester outer fabric with internal TPU Coating and fluorocarbon free DWR
  • Dimensions:Regular: 183cm x 51cm x 8cm. Long Wide: 196cm x 64cm x 8cm
  • R-Value:4.3
  • Packed Size:Regular 15cm x 9cm (5.9in x 3.5in) / Long Wide 19cm x 9cm (7.5in x 3.5in)
  • Product Code:QMA-06
  • 2 layers of TILT reflective film help reduce radiant heat loss without adding weight or bulk
  • Offset weight saving internal cut outs help disrupt the flow of convection currents and keep warm air static
  • R-Value: 4.3
  • Thickness: 8cm
  • Packed size: 18x9cm
  • Tapered mummy shape to save weight
  • Low profile two-way valve for easy inflation and deflation
  • Pump sack included for rapid and hygienic inflation
  • Roll-away stuff sack with repair kit included
 
average rating 5.0 out of 5
Based on 11 reviews
  • 5 Stars
    11 Reviews
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100% of reviewers would recommend this product to a friend
11 Reviews
Reviewed by Ryan M.
Verified Buyer
I recommend this product
Age Range
45 - 54
Do you recommend this product?
Yes
Rated 5 out of 5
Review posted

Very happy

Light weight, compact and very comfortable. Very pleased with this sleep mat

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Reviewed by Daryl T.
Verified Buyer
I recommend this product
Age Range
35 - 44
Do you recommend this product?
Yes
Rated 5 out of 5
Review posted

Rab mat

Great value for money

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Reviewed by Tony H.
Verified Buyer
I recommend this product
Age Range
65+
Do you recommend this product?
Yes
Rated 5 out of 5
Review posted

Initial impressions - good mat

My 10yo Thermarest NeoAir x-lite developed a leak that i could not isolate so needed a new one. The original did Te Araroa as well as other walks but am not doing so much now and balked at the $600 + price of a new one! I found the RAB ones reviewed and thought i would give it a try. None available initially but Dwights staff were great and ensured i got one as soon as new stock arrived - in time for my trip to Abel Tasman. Only used it for 3 nights so far but absolutely no concerns - it did the job well.

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Reviewed by Jonathan
I recommend this product
Rated 5 out of 5
Review posted

5 Stars

Is small to pack and very lite. Happy with the product. Looking forward to testing in the wild

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Reviewed by Lynne H.
Verified Buyer
I recommend this product
Age Range
65+
Do you recommend this product?
Yes
Rated 5 out of 5
Review posted

Rab sleep mat bought for present and he loves it

Rab mat great! Good sportsman Weston Hill who just won NZ Athletics Trail Runner of the year uses this matt in some of his races !

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