Pressure vessel for storing a fluid

A pressure vessel for storing a fluid, comprising a plastic core container and an outer jacket applied to the plastic core container, with the outer jacket comprising:

• a first fibre-reinforced reinforcing device with one or several wound layers comprising first fibres that are embedded in a first matrix material;
• a second fibre-reinforced reinforcing device formed on the outside of the first reinforcing device and with one or several wound layers comprising second fibres that are embedded in a second matrix material;
• and
• an impact-absorbing thickening of the outer jacket in a polar cap region at a transition region between a face and a circumference of the plastic core container, wherein the impact-absorbing thickening is formed in that one or several wound layers that are thickened in the polar region are formed in at least one of the first and second reinforcing devices with a face opening that is larger than a face opening of other wound layers in at least one of the first and second reinforcing devices, which wound layers are not thickened in the polar region.