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When you need reliable insulation in a lightweight package, this all-round sleep mat balances maximum warmth with minimum weight for a comfortable night’s rest wherever your journey takes you.
Weight : Regular 695g - Long Wide 950g
R-Value : 3.8
Dimensions : Regular 183 x 51cm - Long Wide 196 x 64cm
If any of our clothing or equipment fails we promise to help make it right with a repair or replacement, find out more here. Damage due to wear and tear or improper care can also be repaired for a reasonable fee.
These ratings compare our sleeping mats against each other. All our mats, at any rating, are of the highest quality.
What It's Best For
Mountaineering
Trekking
Fast & Light Adventures
Camping
Tell Me More
Lightweight and compact, the Stratosphere 4 boasts a superior warmth-to-weight ratio, making it a versatile all-mountain sleep mat which has a small enough pack size to take on all your trekking, climbing and backpacking adventures. The recycled Stratus™ R insulation is designed to trap air and reduce heat loss through convection, helping to maintain your temperature when the mercury drops and ensuring you recharge ready for tomorrow’s challenges.
The mat features a low-profile two-way valve and comes with a handy pump sack, so it’s quick and easy to inflate when you’re ready to hunker down for the night. Oversized outer chambers keep you in the centre of the mat and stop you rolling off in your sleep, while the spacious rectangular shape will ensure a comfortable night’s rest whatever your preferred sleeping position.
Constructed using 100% recycled insulation and recycled outer fabric finished with a fluorocarbon-free DWR, the Stratosphere 4 is a robust and reliable sleep mat which you can depend on to keep you comfortable, warm, and well-rested.
Your sleep mat’s R-value is an indication of how well it will resist heat loss. A higher R-value means it will insulate you more effectively from the ground underneath, and will be better suited to cold environments.
Your sleep mat’s R-value is an indication of how well it will resist heat loss. A higher R-value means it will insulate you more effectively from the ground underneath, and will be better suited to cold environments.
Resilient synthetic insulation developed with 100% recycled post-consumer material. Designed to trap the maximum amount of air possible, Stratus™ R boasts superior warmth for its weight, retains warmth when wet, and dries quickly.
Resilient synthetic insulation developed with 100% recycled post-consumer material. Designed to trap the maximum amount of air possible, Stratus™ R boasts superior warmth for its weight, retains warmth when wet, and dries quickly.
This product no longer contains fluorocarbons. Whether that’s in a DWR, on the zips, the threads or in the fabric. Find out more about how we’re cutting fluorocarbons from our gear.
This product no longer contains fluorocarbons. Whether that’s in a DWR, on the zips, the threads or in the fabric. Find out more about how we’re cutting fluorocarbons from our gear.
#TheMountainPeople: Gear inspiration from our members
It's In Our DNA
A Climate Neutral Company
We're reducing our carbon footprint while balancing any remaining emissions through carbon credits. It's not a final solution, but we believe in taking accountability for today's emissions while we reduce tomorrow's
We're working to make the garment industry fairer. We're dedicated to supporting garment workers' rights to safe, dignified and properly paid employment. Making garment production fairer for everyone.
The Rab Service Centre is here to keep your gear in action, reducing waste and making more memories in the process. Find out if we can help you with a repair now.
We're committed to becoming a Net Zero business by 2030. We'll reduce all unnecessary carbon emissions from our business operations and will offset any that are left.
Rab ships throughout the UK, EU and the United States. All UK orders are shipped free of charge by DPD. Orders placed during the week and before midday will typically be delivered within 48 hours, orders placed on weekends will ship on the following Monday.
For more information regarding shipping, including shipping charges and estimated delivery times, please visit our help centre.
Returns
If you are unhappy with your purchase, please return it to us within 28 days of receipt. The item(s) must be in resalable condition with tags attached. We are currently unable to exchange items and will refund products returned to us under the policy above.
Please note, we are not able to accept returns for underwear unless the product is faulty or damaged. We advise that you use a recorded courier service to return your item(s) as we cannot be responsible for items lost in the post.
For more information regarding returns and warranty, please see our help centre.