The Pool Mate Extreme-Mesh Green Winter Pool Cover is a mesh winter pool cover. Mesh pool covers allow water to pass through their material. Customers buy mesh pool covers because they require less maintenance than solid pool covers during the winter months. Mesh pool covers are also good for high wind situations as the material sits in the pool water. Pool owners that use a mesh pool cover typically will have additional work cleaning their pool in the spring before opening. The Pool Mate Extreme-Mesh Green Winter Pool Cover features green and black woven colors. Please order by your pool size, as the overlap goes beyond the pool size listed. This cover includes a four-foot overlap. If you have a very large top rail, please consider a larger pool size. This cover should be able to comfortably float in the pool water without excessive stress. This cover is not meant to be used as a debris cover during the swimming season. This winter pool cover is intended to be used during the off-season. This cover is meant for traditional above ground pools with a traditional top rail. Includes a winch and cable that should be used to secure your pool cover through the grommets around the perimeter of the pool cover. For extra securing, cover clips and cover wrap (both sold separately) are suggested for pool closing. No other method of installation is recommended..