This bundle pack contains 1 pair of replacement Earpads for Bose QC35 or QC35ii, and one pair of Large Protective WC SweatZ Covers. Our replacement earpads compatible with Bose Quietcomfort 35 Headphones have upgraded PU leather, increased thickness, and improved noise cancelation. Combined with our SweatZ protective covers, your earpads should last longer and be more enjoyable for all our excersise activites!