The women-specific Sea To Summit Ultralight Insulated shares the Air Sprung Cell construction of the unisex pad but is cut to fit the female body — wider at the hips (54.6 cm) and narrower through the shoulders, with overall length trimmed to 168 cm. Thermolite insulation backed by an Exkin Platinum reflective layer gives an R-value of 3.5, slightly higher than the standard version, putting it in the ballpark of three-season use down to around -5°C.
At 5 cm thick it weighs 480 g and packs to 24 × 13.5 cm. The 30D top fabric with TPU lamination keeps weight down while the 40D bottom layer adds abrasion resistance against the tent floor. The package includes a stuff sack, a pump sack for lung-free inflation, and a field repair kit for punctures on the trail.
A good fit for hikers wanting three-season insulation with some margin into colder nights, without stepping up to a heavier winter-rated pad.