The Alison Plus features an alternate dark grey steel leg, bold and angular in design. Choose your favourite to compliment one of our many upholstery options. Alison Plus sofa pieces are sectional so can be combined in a number of ways depending on the dimensions of your space. Alison Plus fabric sofas have removable covers so can be easily dry-cleaned, the sofa frame is made of rolled-steel and solid birch and is guaranteed to last for a minimum of 15 years.