Soflay^TM  an yi shi da kumfa polyurethane da aka sake yi. Rufin kafet ɗin PU kumfa yana da kyau musamman a rufi da tasirin sautin tasiri har ma da daɗi da ɗorewa. Wannan ya sa ya zama abin da aka fi so don murfin kafet. Pu underlay shima nauyi ne, don haka yana da sauƙin ɗauka da dacewa.

Pu foam underlay range ya shahara don ta'aziyya. An fara fitar da shi a cikin 2010, layin murfin kafet tun daga lokacin ya girma ya zama mafi mashahuri mai siyar da kayan masarufi a China. Ana samun madaidaicin darajar Soflay a cikin kumfa PU da polyurethane don nau'ikan bene daban -daban musamman don tauraron otal da yankin villa mai kyau, musamman 10mm pu underlay da 12mm pu foan underay. Shi ne mafi yawan nau'in kushin da ake amfani da shi a ƙarƙashin kafet a cikin saitunan zama, haka kuma shine mafi yawan nau'in matashin kafet da ƙaramin kafet da ake amfani dashi a aikace -aikacen zama.