Available Colour - Black. The Drive DeVilbiss Healthcare Chicago contains memory foam seat upholstery, providing comfort and helps to distribute pressure for long periods. It has been tested to BS 5852 ignition source 5 (Crib 5) making it ideal for nursing and care home environments. An ergonomically contoured seat and back with padding adds to the comfort and support for the user, while the Chicago also offers an excellent snooze position.