Anti-slip tepi inogadzirwa neyakaoma uye yakasimba carbonized silicon particles.Zvimedu zvakadai zvakasimwa pamafirimu epurasitiki ane simba guru, anoyambuka, anopesana nemamiriro okunze, uye ndechimwe chezvinhu zvakaoma zvikuru zvinozivikanwa kusvika nhasi.