Product Features: 1. Maintain the temperature of the pipeline and its internal airflow, which is equivalent to putting a "clothing" on the pipeline; 2. Avoid the temperature difference inside and outside the pipeline, and fight against and reduce the generation of condensed water. Compatible with universal standard (1.8m) ventilator tube Cleaning Instructions: 1. The material of the breathing tube sheath is nylon and polyester fiber, without any latex; 2. The breathing tube sheath can only be hand-washed or dry-cleaned. The sheath may fade. Please clean it separately before using it for the first time, and do not bleach it. 3. Wash in cold or warm water with a mild cleaning solution 4. Rinse thoroughly and dry naturally