A disposable diaper is provided. The diaper comprises a topsheet comprising a first nonwoven web. The topsheet has a basis weight greater than 25 gsm, according to the Basis Weight Test herein. The diaper comprises a backsheet comprising a second nonwoven web and a film. The film has a WVTR value of less than 6,500 g/m2, according to the WVTR Test herein. The diaper comprises an absorbent core comprising an absorbent particulate polymer material disposed between the topsheet and the backsheet. The absorbent core is substantially cellulose free. The diaper has a relative humidity of less than 75%, according to the Humidity Test herein.