<p>In this study, cotton fabrics were treated with temperature-water responsive nanocompositesconsisting of shape memory polyurethane (SMPU) and cellulose nanowhiskers (CNWs) for smartcrease recovery/retention functions besides breathability. The smart crease recovery/retentionfunctions were determined in air/water at different temperatures and relative humidities simulatinglaundry and drying processes. Smart breathability function was tested by water vapour permeabilitytests under different temperatures-relative humidities and air permeability tests at different fabrictemperatures. Physical-mechanical properties and washing fastness properties were also investigated.Fourier-transform infrared (FT-IR) and scanning electron microscope (SEM) analyses confirm theSMPU-CNW nanocomposite presence on fabric. Test results show that the treated cotton fabrics havenot only dual responsive permeability as a result of dynamic pore structure, but also dynamic creaserecovery/retention with enhanced mechanical properties. It is thought that suggested method cancontribute to both ecological and economic aspects of sustainability as a result of less energy andpolymer consumptions besides smart comfort enhancement and mechanical functions.<br></p>