Mattress topper/‘enhancer’ double 5cm depth (Wallands Park BN7)

Good clean condition, was used on guest bed at my mother’s so only had occasional use (clean pet free home)
Standard double, makes mattress more comfortable/warmer in winter135 x190 x5cm
Cotton outer, polyester inner with fire label
Will be in a zipped storage bag but is large (c. A large black bin bag size)
Please say when you can pick up