A catheter assembly is disclosed comprising a catheter, preferably having a hydrophilic surface coating and a package accommodating said catheter. The package preferably also accommodates a wetting fluid. The package comprises: 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, said perforation line defining a flap opening a third sheet material connected by means of an adhesive over said flap opening, wherein said 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. Further, the third sheet material forms a tab not provided with adhesive, said tab providing a grip portion for peel opening of the package.