All drain bags have a reinforced hanger with built-in anti-kink drain tube guide and adjustable bed sheet clam Drain bags come with an option of an anti-reflux device: The anti-reflux tower provides anti-reflux protection without mechanical parts to hinder flow The anti-reflux device has a clear one way mylar valve for visualization of urine flow The anti-reflux valve flap system minimizes back flow into the drainage tube
