How to make the back gap of isolation gown not too big?

Precautions 1. The length of isolation gown should be appropriate, and there are holes to be mended. Before wearing isolation gown, take all things needed for work, and avoid wearing isolation gown to take things from the clean area. 2. When wearing isolation gown, avoid touching clean objects. When tying the collar, don't let the sleeves touch the face collar and work cap. When wearing a isolation gown, you must completely cover the work clothes inside. Isolation gown's inner surface and collar are clean areas, so attention should be paid to avoid pollution when putting on and taking off. 3. After passing through isolation gown, activities are limited to the designated area, and it is not allowed to enter the clean area. 4. When hanging the isolation gown, don't expose the sleeves or cover the clean surface with the contaminated surface of clothes. Isolation gown should be replaced every day. If it is wet or contaminated, it should be replaced immediately.