Described is a polyethylene composition comprising at least one polyethylene having a crystallinity of less than 60, or 55, or 50% and within a range from 0.2 wt % to 15 wt % of cyclic-olefin copolymer and within a range from 0.2 wt % to 15 wt % of hydrocarbon resin, by weight of the polyethylene composition. The polyethylene compositions can be formed into useful articles such as films and injection molded and thermoformed articles.