This garden furniture covers waterproof is made from 600D PVC-lined oxford fabric, comparing with 420D cover, 600D cover performances better at all aspects, it's more waterproof, UV-resistant, tear-resistant, fade-resistant etc..Not only does it provide stronger water resistance and crack resistance, but also it is environmentally friendly.There is 4 click-close straps at the bottom. Which was special designed to keep the cover secure on the furniture, so that it will not be blown away by wind. Air vents are designed to keep air flowing, reduce internal condensation, keep the inner cushion dry and mold-free.This garden table cover is suitable for most shapes, such as dining table, coffee table, rattan furniture, sofa set, rectangular and oval furniture set etc.. Dakota Fields