Unicharm announced Charm Nap Gokuusu Slim on September 14, 2026, ahead of a nationwide Japanese launch the following day. The women's bladder-leakage pad range has six labelled capacities: 3, 5, 10, 15, 30 and 50 cc. The 3 cc and 5 cc versions are approximately 1.5 mm thick; the 10, 15 and 30 cc versions are about 2 mm; and the 50 cc version is about 2.5 mm.
The company says its flexible absorbent core helps the pads follow body movements, while a soft mesh surface reduces the area in contact with skin. It reports a thickness reduction of up to approximately 53 percent for the 30 cc version and about 1.5 times the flexibility for the 50 cc version, each compared with its previous product. Unicharm links the design to demand for less noticeable products during extended outings and exercise. It also says slimmer products and smaller packages reduce material requirements and improve transport efficiency. Pack sizes range from 16 to 34 pads, with open pricing.