Using a simple expedient similar to Legoâs snap-on system, the height of the Up sofaâs backrest can be adjusted according to personal choice. Place the back cushions on top of the low backrest to create a higher backrest and a deeper seat. The particular shape of the cushions ensures maximum stability. The goose feather-padded cushions and armrests create a particularly soft, snug sofa. Also available with raw-edged leather upholstery.