Dear customer, Thank you for choosing our products. If there is any problem with our products, please contact us through the order information. We will be happy to serve you and solve it for you as soon as possible within 12 hours, thank you High quality: Made of high-quality PVC, not easy to deform and break, not easy to age and can be reused, the transparent material has the largest light transmittance and the smallest reflectivity, helpful for plant growth Air control: There is a rotary adjustable air vent valve on the top, can help plants get enough air and water circulation, easy to open or close by rotating the plastic plate, easily control ventilation and humidity Size: Diameter: 26cm, Height: 21cm, included a total of 6pcs garden cloches, which can protect plants of different sizes Easy to use: Just cover the plant with the garden dome bell cover, then insert the securing pegs through the cover hole, and finally open or close the vent (control the black vent plate on the top), don't worry about the covers being blown away by the wind Applicable: Suitable for home gardening, private gardens, landscape engineering, etc. It can protect seeds, seedlings, small plants and flowers from frost and other bad weather, and can also avoid becoming food for hungry creatures, insects and birds