SILEX-D - オリジナル - プラグモデル2（3.5インチ）M

The double density is spot on—the outer skin has that soft, pliable give while the inner core keeps it firm enough to feel substantial. It warmed up to body heat fast, which made the whole thing feel way more natural than my old hard plastic plug. Easily the most comfortable 3.5 inches I've owned.