UFREIs have been already applied for seismic isolation of low-rise masonry prototypes tested in the laboratory \cite{das2016shake}. The experimental results show a desired behavior of the isolated structure with a significant reduction of the roof acceleration and inter-story drift. This excellent performance is also followed by an easy technical detail of the connection between the isolators and the structures. Consequently, advanced and complicated construction methods can be avoided. Basing on such promising results, a first full-scale masonry building isolated with UFREIs has been recently built in Tawang, India, a well know high seismicity region \cite{thuyet2017mitigation}.
UFREI specimens in the literature \cite{toopchi2008testing,calabrese2015shaking,van2017evaluation} mostly consist of many thin rubber pads (15-20 pads), resulting in high shape factors, defined as known as the ratio between the load area to the force-free area of a single pad. Employing many thin pads, consequently, increases the price because of the need for adhesive on rubber-fiber interfaces. Thus, in this work, a UFREI with significantly fewer rubber pads (see Figure \ref{image1}) is proposed to result in a cheaper isolation system. In addition, thanks to the small height of the bearing, the full-contact mechanism can be accelerated without any expensive modification.