UltraLight Self-Inflating Sleeping Mat
BEST USE: Ultralight Backpacking
WEIGHT: 13.9oz | 395g
PERFORMANCE: 2.5 Season
PACKED SIZE: 4.25 x 11 in | 11 x 28 cm
Shipping & Returns
Our warehouse is actively shipping orders from 8am to 1pm MST Monday through Friday. Most orders ship in one business day, but the transit time can take up to 7 days, depending on your distance from Boulder, Colorado.
2nd Day and Next Day Air orders will ship same day if placed by 1pm MST, Monday-Friday (except holidays).
All orders are eligible for fast and easy returns within 60 days of purchase.
For more details, please check out our Help Center
For those who like to travel light, the Ultralight Self-Inflating Sleeping Mat will add the promise of comfortable sleep to your pack, without significant weight or bulk. While the Delta Core-V technology removes small sections of foam without sacrificing comfort, the embossed silicone grip print ensures you and your sleeping bag stay on the pad. For the ultralight adventurer, pack up is super easy with the patent-pending multi-function valve that allows you to roll it up without air sneaking back in. Ideal for gram counters who like to sleep comfortably.
In our lighter SI air mat models, we have removed 20% of the weight and bulk of the PU foam by using our vertical Delta Core-V™ method. We use sophisticated pressure mapping data that becomes the blueprint for our distinctive graduated core pattern. Where extra warmth and support is needed for the body contact areas - shoulders, hips, and feet - the core holes are smaller. In the less critical areas, we have removed more foam to minimize the weight and packed size. Delta Core-V™ technology is used in our Ultra Light SI and Camp Mat SI models.
To make inflation and deflation of its air mats easier, Sea to Summit developed the multi-function valve. This valve integrates an inflate port with a one-way valve to prevent air loss before you seal the valve, a rapid air dump deflate port, and a fine tune button to adjust for comfort - all in one compact, low profile unit. It has also been designed to allow easy attachment of a pump, for simpler inflation.
Extrusion lamination is common in the medical and aeronautical industries, but Sea to Summit pioneered its use in outdoor products. Liquid Thermoplastic Urethane is applied to the face fabric through an extrusion head, where it bonds permanently. The result: Sea to Summit sleeping mats are more reliable and longer-lasting.
The Pillow Lock™ System comprises of self-adhesive hook-and-loop patches which are supplied with all Sea to Summit sleeping mats (as of Spring 2019). Attached to your sleeping mat, these patches secure your pillow and prevent it slipping – yet they will not snag on clothing or other lightweight fabrics. All Sea to Summit Pillows (as of Spring 2019) are compatible with this system. Existing pillows can be made Pillow Lock™ compatible by adding an Aeros Pillow Case.
Best UseUltralight Backpacking, Camping
Comes WithStuff Sack
Fabric30D Polyester with an anti-slip print
FoamDelta Core-V technology
Season RatingSummer and later spring / early fall
SpecialMulti-function valve that prevents re-inflation as you pack up
Thickness1 in / 2.5 cm
Frequently Asked questions
Is the Ultralight Self-Inflating Pad insulated well enough for extended three-season temperatures?
Not really. This self-inflating pad has a tested R-Value of 2.6 – suitable for late spring to early fall.
Does Delta Core-V make this pad different from other self-inflating pads?
Yes. The Delta Core-V technology reduces the weight and packed volume without sacrificing support or comfort.
Suitable for backpacking?
Yes. The small packed size and weight under a 1.5lbs make this mat ideal for backpacking and bike touring.