Coloplast Self Cath Female Catheter is a straight tip catheter made from flexible medical grade PVC. It has a siliconized surface, making it easy and comfortable to insert your catheter. The polished eyelets are smooth and allow the bladder to drain quickly. This catheter is available with a straight end or a funnel end. The funnel end helps drain urine into the toilet and allows you to identify the size of your catheter.