- The antifreeze bag for plants is made of durable, soft and breathable non -woven fabric, allowing air and a small amount of water to enter the plant, now healthy growth conditions. 2. There are four sizes available to meet your needs for different types of plants. 3. The practical design of tightening cord and side zipper allows us to cover plants more easily and faster. 4. Thicker vegetable cover can provide better protection against frost for plants. He will keep the air hot longer. The cover will not block sunlight. Your plants can push normally. 5. The antifreeze cover of plants can protect your plants from snow, frost, wind and dust, and grow your plants in good.