Bali Comfort Revolution Microfiber Crop Bra - 2 Pack (X1J3). The Bali Comfort Revolution Microfiber Crop Bra - 2 Pack X1J3 wick with Cool Dri moisture management and have wire-free cups with a seam-free and tag-free 360 stretch body. Bali's Comfort Revolution Microfiber Crop Bra - 2 Pack is made of nylon.