Comfort Plus SI Mat

$143.16 - $159.16
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The Comfort Plus Self-Inflating Sleeping Mat is pure camping luxury. This is a plush, three inch thick, light and easy to use option for anyone looking for maximum comfort.

Delta Core technology reduces the foam's weight and bulk without compromising comfort.  A lightweight but luxurious 30D stretch knit fabric is used on the top surface and each pad is embossed with a non-slip grip print to keep the mat from slipping. And Sea to Summit literally put a twist on their multi-function valve to ensure super-fast deflation, without fighting re-inflation, as you roll it up.


Sea to Summit
3 in
- Regular: 72 in x 20 in
- Large: 78 in x 25 in
- Regular Rectangular: 72 in x 25 in
- Large Rectangular: 79 in x 25 in
Packed Size:
- Regular: 6.5 x 11 in
- Large: 7 x 13.5 in
- Regular Rectangular: 8.6 x 13.5 in
- Large Rectangular: 9 x 13.5 in
- Regular: 2 lbs 2 oz
- Large: 2 lbs 14 oz
- Regular Rectangular: 3 lbs 1 oz
- Large Rectangular: 3 lbs 4 oz
Other Features:
  • 4.1 R-Value is warm enough for all but the coldest ground.
  • Three inch thick foam and knitted polyester upper face fabric provides for an amazingly comfortable night’s sleep.
  • Delta Coring removes over 40% of the foam to reduce weight and bulk, without compromising durability.
  • Woven 30D polyester face fabric has been chosen for its light weight and strength.
  • Silicone print prevents your sleeping pad from slipping on the tent floor.
  • Flip-over multi-function valve for fast and easy inflation, deflation and fine-tuning of air pressure.
  • PillowLock system prevents your Sea to Summit Aeros Pillow from slipping (pillow sold separately).

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.

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. Pillows sold separately.

The innovative Delta Core™ system maximizes the comfort and thickness of Sea to Summit's Self Inflating mattresses while minimizing weight and bulk. 40% of the initial volume of the PU foam is removed in horizontal Delta-shaped cores, giving minimal weight and packed size. Importantly, the top and bottom surface of the PU foam remain completely intact. This ensures consistent warmth along the full length of the mattress and significantly improves bonding of the foam to the shell fabric, which reduces the chance of delamination.
The shape and size of the Delta Cores™ are adjusted across the different thicknesses of Sea to Summit's mattresses to ensure strength and durability combined with excellent support.

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