Nuvue, 22", winter shrub cover, overall dimensions 22"l x 22"w x 24"h, better than burlap, synthetic material will not absorb moisture & stops winter burn, allows sunlight to penetrate, allows water to penetrate & feed plants during the spring & fall, air can flow through material/no greenhouse effect, protects plants from heavy snow build up, collapses for easy storage, spikes designed to penetrate past frost line for a strong hold, helps protect root systems of non indigenous species & helps protect the root systems of new plantings.