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The Exped Ultra 5R sleeping mat provides R Value 4.8 insulation for 4 season expedition use. This inflatable mat weighs 575g in Medium size (183x52x7cm) or 795g in Long Wide size (197x65x7cm), rated to minus 20C with SYNMAT TECHNOLOGY insulation. Suitable for winter mountaineering, long-distance hiking, bikepacking, and Alpine expeditions worldwide.
R Value measures thermal resistance between your body and the ground. Higher R Values provide more insulation from cold ground temperatures. The R Value 4.8 rating on this mat classifies it as a 4 season mat suitable for year-round use including winter conditions.
The Ultra 5R with R Value 4.8 sits in the 4 season category, rated to minus 20C. This rating makes it suitable for Scottish winter camping, Alpine mountaineering, high altitude expeditions, and cold weather bikepacking where ground temperatures drop well below freezing.
The SYNMAT TECHNOLOGY uses 160g per square meter Texpedloft microfiber insulation welded to the top and bottom of the air chambers. This construction prevents the insulation from shifting or bunching, which causes cold spots in mats where insulation can move freely inside the air chambers.
The welded construction maintains consistent R Value 4.8 performance across the entire mat surface from head to toe. The insulation stays in place over the mat's lifetime, preventing the gradual loss of warmth that occurs in mats where insulation compresses unevenly or migrates away from pressure points.
The Medium size weighs 575g and measures 183x52x7cm inflated, packing to 31x13cm. The Long Wide size weighs 795g and measures 197x65x7cm inflated, packing to 34x15cm. These specifications make the mat suitable for expeditions where pack weight and volume directly affect performance.
The recycled 20 denier ripstop polyester face fabric balances low weight against puncture resistance. The ripstop construction prevents small punctures from tearing further, important for remote expeditions where mat failure creates serious problems. The 7cm thickness provides cushioning on rough ground while maintaining low pack volume.
The air chambers run head to toe rather than across the width of the mat. This construction fully supports your body along its length, distributing pressure evenly rather than creating pressure points at the edges of horizontal baffles. The design allows you to sleep on your side, back, or front without feeling the ground beneath pressure points.
The head-to-toe chamber design also increases durability. The continuous chambers distribute stress across the mat structure rather than concentrating it at baffle connection points, reducing the risk of baffle failure that can occur in mats with multiple separate air cells.
The mat uses recycled 20-denier ripstop polyester certified to Oeko-Tex 100 standard, confirming the fabric contains no harmful substances. The Texpedloft microfiber insulation carries bluesign certification, meeting environmental and safety standards in manufacturing. Exped certifies the mat as carbon neutral through myclimate, offsetting production emissions.
Choose Medium if you are under 183cm tall and the 52cm width provides enough room for your sleeping position. The Medium size suits most users who sleep on their back or side without moving significantly during the night.
Choose Long Wide if you are over 183cm tall, move around during sleep, or prefer more space. The 65cm width gives room to shift position during the night without rolling off the mat edge. Side sleepers who move their arms during sleep often prefer the extra width the Long Wide provides.
This mat suits expedition users who need R Value 4.8 insulation in a lightweight package. The specifications make it suitable for winter mountaineering, long-distance hiking where you carry equipment for multiple days, bikepacking where weight affects cycling performance, and Alpine expeditions where temperatures drop below freezing at altitude.
The mat handles Scottish winter camping through to worldwide expedition use. The minus 20C temperature rating covers most expedition conditions when paired with an appropriate sleeping bag rated for the temperatures you expect. The R Value 4.8 insulation provides the ground insulation component while your sleeping bag provides air temperature insulation.
Pair this mat with a 4 season sleeping bag rated for the coldest temperatures you expect to encounter. The mat provides R Value 4.8 ground insulation, but you need a sleeping bag to insulate your body from air temperature. An ultralight camping pillow improves sleep quality on multi-day expeditions where rest matters for performance and safety.
For tent camping in Alpine and mountain conditions, use a groundsheet to protect the 20 denier face fabric from punctures and extend mat life. Consider additional sleeping bag insulation for extreme cold where you need maximum warmth from your sleep system.
The Ultra 5R excels at providing R Value 4.8 insulation in a lightweight package suitable for human-powered expeditions. The 575g weight in Medium size makes it practical for long-distance hiking and bikepacking where every gram affects performance. The SYNMAT TECHNOLOGY maintains consistent insulation across the mat surface over its lifetime. The head-to-toe air chamber design provides comfort on rough ground while increasing durability compared to horizontal baffle construction.
The 20 denier face fabric requires care to avoid punctures from sharp rocks, thorns, or rough ground. Clear your sleeping area and use a groundsheet to protect the mat. The mat requires inflation by mouth or pump, which takes time and effort compared to self-inflating mats. The Medium size 52cm width may feel restrictive for people who move around during sleep or prefer more space. The price reflects advanced insulation technology and lightweight materials, making this a significant investment compared to basic camping mats.
Clear your sleeping area of sharp objects before laying out the mat. Use a groundsheet to protect the underside from punctures and abrasion. Inflate the mat fully before use to ensure the insulation works properly and the air chambers provide full support.
After use, deflate the mat completely and roll it loosely for storage. Store the mat unrolled or loosely rolled in a dry place away from direct sunlight. Avoid storing the mat compressed in its stuff sack for extended periods, as this can damage the insulation and reduce effectiveness over time. Clean the mat with mild soap and water when needed, allowing it to dry completely before storing.
Wylies Outdoor World's owner Drew can help with questions about specifications, sizing, and delivery. Questions about R Value ratings, pack weight for specific expeditions, or which size suits your height and sleeping style? Contact us for advice on selecting expedition sleeping mats.
R Value 4.8 provides 4 season insulation suitable for winter camping and expeditions in temperatures down to minus 20C when paired with an appropriate sleeping bag. The R Value measures thermal resistance from cold ground, with higher numbers providing more insulation.
Choose Medium if you are under 183cm tall and the 52cm width provides enough room for your sleeping position. Choose Long Wide if you are over 183cm tall, move around during sleep, or prefer the extra 13cm width for comfort.
Inflate the mat by mouth or use a pump bag. Exped sells pump bags designed for their mats that make inflation faster and prevent moisture from your breath entering the mat, which can damage insulation over time.
Yes, the R Value 4.8 rating and minus 20C temperature rating make this mat suitable for winter mountaineering when paired with a sleeping bag rated for the air temperatures you expect to encounter.
The Ultra 5R uses SYNMAT TECHNOLOGY where insulation is welded to air chambers, maintaining R Value 4.8 performance over the mat's lifetime. Cheaper mats typically use lower R Values, heavier materials, or construction where insulation can shift and create cold spots over time.
A groundsheet protects the 20-denier face fabric from punctures and abrasion, extending mat life. While not required, a groundsheet is recommended for expedition use where mat failure in remote locations creates serious problems.
Yes, the Medium size weighs 575g and packs to 31x13cm, making it suitable for bikepacking where pack weight and volume affect cycling performance. The R Value 4.8 insulation handles cold-weather bikepacking conditions.
The SYNMAT TECHNOLOGY construction, where insulation is welded to air chambers, maintains performance over the mat's lifetime. Proper care including using a groundsheet, avoiding sharp objects, and storing the mat uncompressed, extends its working life.
Wylie's Outdoor World's owner 'Drew' handles all returns, and exchanges personally.
We offer a 30-day (from the date of purchase) returns and exchange policy. You may return most new, unopened, unworn, and unused items within 30 days of your order date for a refund or exchange. However you must contact us within 14 days to inform us. (Some items in our store are non-returnable) such as used batteries, and underwear for example. We must be able to resell a product again as brand new.
If you need to return an item, simply log in to your account, view the order using the "Complete Orders" link under the My Account menu, and click the Return Item(s) button. Please let us know if you would prefer a refund, or an exchange. Drew will confirm your selection and send you an invoice (If applicable for exchanges) and await your return to arrive with us.
Please, allow Drew 3 to 5 days to process your returns or exchanges. However, the "turnaround" time is often faster than this.
We ship to UK mainland predominantly. However, we can ship internationally on request.
We use DPD exclusively for all UK orders as standard. We offer free shipping on all orders over £100, orders under £100 are charged a £5.99. (Some long, or overly heavy/large items will vary in shipping cost)
Drew also packs customers orders personally. We ask you to allow 2 days to process orders. This allows Drew adequate time to process orders, be the sole point of contact for all our customers, and manage our website. On average delivery time is 3 to 5 working days. However, Drew is quite efficient. Orders are often processed and delivered in a shorter time.
Meet the owner
Wylie's Outdoor World first opened our doors back in 2014. Drew Built, and manages our website. Answers all customer contacts, and dispatches orders personally.
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