A urinary catheter assembly (1) is provided. The catheter assembly has an intermittent urinary catheter (2) with low-friction surface and a tubular elongated package (3) with a side-opening (15). The catheter may be provided with a hydrophilic surface and the package may include a liquid swelling medium. The user may grab the connector (4) through the side-opening and pull out the catheter of the package through there. Spillage of the liquid swelling medium or lubricant is avoided. The side-opening may be configured so that it has two stable configurations, a storing and a folded configuration.