A multimodal polyethylene composition comprising at least three ethylene polymer fractions having distinct molecular weights or comonomer contents, the at least three ethylene polymer fractions comprising at least one first ethylene polymer fraction having a first molecular weight, at least one second ethylene polymer fraction having a second molecular weight higher than the first molecular weight, and at least one third ethylene polymer fraction having a third molecular weight higher than the first molecular weight, wherein the at least one first ethylene polymer fraction and the at least third ethylene polymer fraction are prepared by the use of a first and, respectively, third catalyst of the single site type.