When I am out in public and don’t want to risk any leakage I remove the sleeves when the fit is tight. After the materials are broken in I can leave the sleeves on and completely drain the urine
As Tekcon mentions the key is to completely relax the PC muscle to allow maximum flow and then powerfully contract the PC muscle for proper elimination. To be sure I will do this 2-3 more times to make sure. Its takes a bit of practice to get the routine down pat and then to make it a ritual.