The Airlite Towel Large is the biggest size in Sea To Summit's ultralight towel line, made from microfibre (85% recycled polyester, 15% nylon). Microfibre's main advantage over cotton is the absorbency-to-weight ratio — at just 67 g this towel soaks up more than three times its own weight in water while still drying fast, rated in the manufacturer's fastest category (under 30 minutes).
After use it rolls down into its own stuff sack, roughly 6 × 6 cm, noticeably smaller than an equivalent terry towel would pack to. A sewn-in hanging loop lets you clip it to a pack or tent line to finish drying on the move.
The Large size is meant for full-body drying after a shower or swim rather than as a pocket-sized option — a fit for longer treks, travel, and water sports where the towel gets used repeatedly and needs to dry quickly between days.