Sons of Arthritis best selling Ibuprofen Chapter T-Shirt in Black & White! T-shirt is Gildan Ultra Preshrunk 100% Cotton. Surcharges apply for sizes 2XL – 4XL. Sons of Arthritis is now using Direct to Garment (DTG) printing which has 5 times greater detail than traditional Silk Screening. So don't wait, don't hesitate, get yours today!