An uncompounded polyolefin powder is disclosed, having a particle size distribution such that D95 is less than 355 μm and (D90−D10)/D50 is less than 1.2, where D95, D90, D50 and D10 are defined such that 95 vol %, 90 vol %, 50 vol % or 10 vol % of the polymer particles have a diameter of less than D95, D90, D50 and D10 respectively. A process for making the powder is also disclosed.