Mr. Stultjens had undergone prostate surgery because of prostate cancer. Although the surgery was successful and the cancer remained stable, he struggled with a lingering problem: urine leakage. “When cycling with an ordinary bicycle saddle, when dismounting I immediately got untenable and imperceptible urine loss because the pressure of the perineum on the bladder was gone at once,” he says. This uncomfortable situation made cycling, an activity Mr. Stultjens does a lot with his wife, a challenge.