Power Joint finish: Our unique crimping technique achieves high water resistance without impairing dissolvability. Drain holes: Excess water and urine drain away. Secure double-bridge structure: Keeps the sheet stable in position and prevents it from crinkling or rotating. 3D stepwise cup: The single sheet of material forms a three-dimensional shape, securely capturing the sample and preventing it from sliding out. Flush arch: Stops urine from contaminating the sample, making it easier to collect a high-purity sample * Does not completely prevent contamination with urine.