Outerstuff MLB Seattle Mariners Youth Boys Phantom Heathered Short Sleeve Tee, Stone Grey, Large 10/12 100% Polyester Imported Screen printed graphic. Offically licensed by the MLB Machine wash cold separately. Gentle cycle only. Non-chlorine bleach when needed. Tumble dry low. Remove promptly. Use cool iron if needed. Do not dry clean Screen printed graphic Officially licensed by the MLB Machine wash cold separately; Gentle cycle only; Non-chlorine bleach when needed; Tumble dry low; Remove promptly; Use cool iron if needed; Do not dry clean