Sea to Summit Women's Ultralight Self-Inflating Sleeping Mat

The Sea to Summit Women's Ultralight Self-Inflating pad is the lightest self-inflating model in Sea to Summit's women's range, with the foam-core construction trimmed to a 2.5 cm profile and 545 g in Regular size (170 × 53 cm). The Delta Core-V foam technology shapes the pad wider through the hips and shoulders for side-sleeping women, but the thinner core also drops the R-value to 2.9 — the lowest among the self-inflating pads here, suited to three-season use rather than shoulder-season cold. At around 188 g per unit of R-value, it's not the most efficient pad by warmth-to-weight; the appeal is the simplicity and reliability of self-inflating foam over a pure air chamber, with lower risk of total deflation from a puncture since the foam retains some loft even with air loss. The 30D woven polyester top and bottom carry an anti-slip silicone print, and a stuff sack, repair kit, and PillowLock attachment are included. A reasonable pick for warmer three-season trips or hikers who value the failure-tolerant foam-core design over an air pad's warmth-to-weight advantage.