ConvaTec Natura + Standard Closed Bottom Sack Bag With Operculum 57mm The closed-end bags of Natura (R) + are single-use. They are available with the filter to allow the gas to escape and deodorize. When it is necessary to change the bag, it is sufficient to remove it and throw it in the waste. To be used with the plates of the Natura (R) + system. Opaque bag with standard closed bottom, opaque with inspectable window - 57 mm Format Pack 30 bags