5 in 1 Sound/Thermal/Vapor barrier,Odorless,Acoustics, 3mm, 200sqft underlayment

Odorless: No rubber kind of smell Superior Thermal protection: best temperature retention helps to keep room temperature--help your floor to feel warm in winter and to feel comfortable in summer Superior Sound Insulation: IIC 73 , STD 71. Advanced Acoustic, quiet, and comfortable while walking or standing on your floor Better moisture protection on your floor