Ultralight SI Mat - Regular
- Light and packable for minimalist fast hikes, the 1 in. thick Sea To Summit Ultralight SI sleeping pad uses vertical coring to keep body-contact areas warmer with great support and packability.
- Core has smaller die-cut holes in body-contact areas (shoulders, hips and feet) to keep you warm; larger die-cut holes in non-body contact areas help reduce weight and bulk
- One-way inflation valve can be reversed and used to prevent air from being drawn back in; allowing you to roll the mat without fighting re-inflation as you roll
- R-value equals 2.6; most sleeping pads we sell range in R-value from 1.0 (minimally insulated) to 9.5 (well insulated)