A catheter assembly includes a catheter, preferably having a hydrophilic surface coating and a package accommodating said catheter. The package preferably also accommodates a wetting fluid. The package includes a first and a second sheet material connected around the edges a perforation line extending along a non-closed loop in one of said sheet materials, which defines a flap opening a third sheet material connected by means of an adhesive over said flap opening. The third sheet material with a margin covers the entire flap opening. The adhesive is adapted to maintain a sterile closure of the package before use, and to be resealable after use. The third sheet material forms a tab not provided with adhesive and the tab provides a grip portion for peel opening of the package.