Personalized Thanksgiving Autumn Fall Harvest T-Shirt. Beautiful fall harvest themed autumn tree for thankful gratitude or a Thanksgiving holiday T-Shirt - White Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.