Joalokaha lebitso le bontša, enke ea silicone ke mofuta oa enke e entsoeng ka silicone. E kopanya elasticity e babatsehang ea silicone le thepa ea khatiso ea enke, e hlahisang enke ea khatiso e khomarelang ka thata libakeng tse fapaneng ha e ntse e fana ka nako e telele haholo.
