I Don't Always Test My Code Full Sleeve Geek T-ShirtI Don't Always Test My Code Full Sleeve Geek T Shirt Material: 100% Cotton (Double Bio Washed) Quality: Zero Shrinkage (Fine Cotton) Wash Note: Machine wash. Wash in cold water, use mild detergent, dry in the shade, do not iron directly or scrub on print, do not bleach, and do not tumble dry. Dry on a flat surface as hanging may cause measurement variations. Standard Sizing: We follow U. S. and EU standards, and our sizes do not vary by more than + 0.