Tested to -8 degrees C, this high quality frost protection cover envelops both plant & container, helping to protect both roots & pots in extreme conditions. The 100gsm fleece allows air & light to penetrate, creating a protective micro-climate, the large 3-way zip opening gives easy access, & the toggled drawstring ensures a snug fit. Base is wipe-clean polyethylene. 90cm (3') wide x 150cm (5') high.