(Different Batches, Different Fabrics) Starting from Batch 70, The Thin Fleece Fabric Composition Remains Unchanged. Only The Composition of Batch 85 Royal Blue Fabric Is Adjusted: Fabric: 83.7% cotton, 16.3% polyester (Excluding Trims). Subsequent Fabric Compositions Follow The Original. from Batch 99 Onwards, The Composition Is Updated: Fabric: 86.5% cotton, 13.5% polyester