In Blumberg v. M. & T. Incorporated (1949) 34 Cal. 2d 226, 209 P.2d 1, the plaintiff, a woman wearing high heels, fell when the heel of her shoe caught in the floor mat in the lobby of an office building. It "was constructed of small pieces or strips of rubber or similar material held together in a row, running in both directions at right angles, with open spaces of varying sizes. . . ." (Id. at p. 228.) A nonsuit granted the defendant was reversed. "The size of the openings was inherently dangerous for the San Francisco women who wear such heels for street use, and the property owner knew, or should have known, of such danger." (Ibid.)