The Sea To Summits Ultralight XR Insulated Air Sleeping Mat delivers advanced warmth, comfort, and packability in a true ultralight design. This next-generation insulated sleeping mat is 14% lighter, 30% thicker, and 16% more insulative than before—making it ideal for backpacking, bikepacking, and fast-moving adventures. Featuring Air Sprung Cell™ technology, the Ultralight XR conforms to your body for even support and fewer pressure points, providing superior comfort for side sleepers and active sleepers alike.
The ThermalCore insulation system reflects body heat back toward the sleeper for reliable performance in cold conditions, while a durable 30/40D face fabric and TPU internal laminate ensure proven field reliability. Built with RCS-certified recycled materials and bluesign® APPROVED fabrics, the Ultralight XR offers exceptional comfort with a lower environmental footprint. Whether you’re tackling a thru-hike or chasing alpine summits, this sleeping mat guarantees a warm, quiet, and restful night’s sleep—anywhere you roll it out.
Sea To Summits Ultralight XR Insulated Air Sleeping Mat Features:
- 14% lighter, 30% thicker, and 16% more insulative than the previous model.
- Air Sprung Cell™ technology provides even weight distribution and eliminates pressure points for superior comfort—ideal for side sleepers.
- ThermalCore insulation with reflective TRM layer retains warmth and improves R-Value performance by 16%.
- Hybrid 30D/40D fabric with TPU laminate and Ultrafresh antimicrobial treatment ensures long-term durability and hygiene.
- RCS-certified recycled fabrics and bluesign® APPROVED materials reduce water, chemical, and energy use by approximately 30%.
- Compact packed volume—53% smaller than previous models for easy storage and portability.
- Includes field-repair kit with self-adhesive patches and a spare valve insert.
- Compatible with PillowLock™ system to keep your Sea to Summit Aeros Pillow securely in place.
- Backed by a proven 10-year field durability record for total confidence on any expedition.
Sea To Summits Ultralight XR Insulated Air Sleeping Mat Specifications:
- Best Use - Ultralight adventures
- Comes With - Stuff sack w/ integrated pump, repair kit & Pillow Lock
- Fabric - Durable 30D/40D nylon
- R-Value - 3.6
- Season Rating - 3 Season
- Special - Anti-microbial liquid-extruded TPU lamination to reduce delamination
- Thickness - 2.6 in / 6.5 cm
- Dimensions - 183 x 55 x 6.5cm
- Packed Size - 190 x 10 cm
- Packed Weight - 475 g
- Stuff/ Pump Sack Weight - 60 g
- Weight - 415g
We aim to ship out all orders placed before 2pm the same working day! For shipments in the United Kingdom mainland, we use Royal Mail Tracked 24 service (DPD Next Day for larger items and items that weigh over 4KG). Please see our shipping policy for more details.
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