The portable urine bag is a disposable, sealed container designed specifically for temporary urination needs. Its core feature is a triple structure of "physical barrier + gravity diversion + self-sealing liquid." The bag body uses a multi-layer composite film (PE+AL+PE): an inner layer that is skin-friendly and splash-proof, a middle layer of aluminum foil that blocks odors and penetration, and an outer layer that is wear-resistant and pressure-resistant. The bag opening has a built-in spiral or press-type one-way valve that automatically opens during urination and closes afterward using a combination of elastic recoil and liquid surface tension to prevent leakage and evaporation. It does not rely on chemical gels, produces no odor residue, and complies with GB/T 38002-2019 safety standards for disposable hygiene products. It is suitable for scenarios where fixed bathroom facilities are unavailable, such as in enclosed spaces, areas with limited mobility, or emergencies.
When folded, it's thinner than a mobile phone, easily fitting into a child's backpack side pocket, hanging on a rearview mirror hook, or even clipped into a stroller's seam. The bag has printed markings for easy dosage monitoring; the thickened bottom prevents punctures, making it convenient for boys to use standing up, girls to use sitting down, and babies to use while lying down.
