Lauren Ralph Lauren Classic Knit Short Sleeve Crop Pant Pajama Set (LN92336). The Lauren Ralph Lauren Classic Knit Short Sleeve Crop Pant Pajama Set LN92336 has a button front top with above the ankle pants and a soft and more breathable knit blend. Lauren Ralph Lauren's Classic Knit Short Sleeve Crop Pant Pajama Set is made of cotton/viscose.