Rab Stratosphere 4 Sleeping Mat - Graphene

The Rab Stratosphere 4 is a versatile 3-season sleeping mat designed for mountaineering, trekking,...

Best current price£109.95from Runners Need

Material

Nylon Polyester

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Rab Stratosphere 4 Sleeping Mat - Regular/Wide

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Runners NeedRab Stratosphere 4 Sleeping Mat - Regular/Wide

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TisoUnisex Grey Rab Stratosphere 4 Wide Sleeping Mat - Sleeping Mat - Size Reg

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Product Information

Full details

The Rab Stratosphere 4 is an ideal choice for mountaineers, trekkers, and multi-day campers who need a balance between comfort and packability during 3-season adventures. With an R-value of 3.8 and an 8cm thickness, it provides a stable, cushioned sleep surface that effectively manages heat retention; however, users should be mindful that it requires the included pump sack for optimal inflation hygiene compared to self-inflating alternatives.

All features

Material	Polyester
Model Part Number	QMA-05-GRH
Brand	Rab

Extended Product Information

FAQs

What is the R-value of the Stratosphere 4?

The Rab Stratosphere 4 has an R-value of 3.8.

Does it come with a pump sack?

Yes, a pump sack is included to facilitate hygienic inflation.

How thick is the mat when fully inflated?

The mat is 8cm thick, providing a high level of comfort and ground isolation.

Can I use this for winter camping?

It is designed as a 3-season mat. While it provides good insulation, it is not intended for extreme winter expedition use.

Is the material waterproof?

The fabric features a fluorocarbon-free DWR (Durable Water Repellent) coating for water resistance, but it should not be submerged.

What should I do if the mat gets a hole?

Use the included repair kit to patch the puncture. Clean the area around the hole, apply the patch firmly, and allow it to set before re-inflating.

Troubleshooting

Mat feels soft or loses firmness overnight

Check that the two-way valve is fully closed and the seal is free of debris. Use the included repair kit if a puncture is detected.

Difficulty inflating the mat

Ensure the connection between the pump sack and the valve is secure. Ensure the valve is set to the correct position for inflation.

Pros and Cons

Pros

Excellent warmth-to-weight ratio for 3-season use
Oversized outer chambers prevent rolling
Compact pack size for easy transport
Stable 8cm thickness provides high comfort
Includes dedicated pump sack and repair kit

Cons

Requires manual inflation via pump sack
Not suitable for extreme winter conditions below its R-value rating
Surface material may be slippery on tent floors

Setup, Compatibility & Care

To set up the mat, connect the included pump sack to the two-way valve. Fill the sack with air and roll it down to push air into the mat; repeat this until the desired firmness is reached. Avoid over-inflating, which can stress the seams. For storage, it is best to keep the mat unrolled and the valve open in a cool, dry place to allow the foam and internal materials to recover. When in the field, use the provided stuff sack to protect the mat from punctures. Always clear the ground of sharp debris before laying the mat down. To clean, wipe the surface with a damp cloth and mild soap, ensuring it is completely dry before storage to prevent mold.