Wrap one of these insulated jackets around your plant pot to protect the plant from low temperatures wind rain and dehydration the unique patented double layer of bubble wrap and 4cm thick insulated panels offers the best protection for your plants vulnerable root systems theres no danger of cold getting in from beneath the pot either as in the base of the jacket is a 4cm deep circle of polystyrene with a central drainage hole to prevent water loggingthe pot jacket measures 50 x 45cm dia