Embrace your laidback love for the Boston Celtics with this Rigor Long Sleeve Jersey T-Shirt from Concepts Sport. Its super-soft, bi-blend fabric provides all-day comfort, making it perfect for game day or everyday wear. Whether you're cheering from the stands or relaxing at home, this Boston Celtics tee is a stylish and comfortable way to show your team pride. Brand: Concepts Sport. Soft rope embroidered wordmark at the chest with the team's logo below. Tall side splits at the hem. Material: 95% Polyester/5% Spandex. Machine wash, tumble dry low. Imported. Officially licensed. Soft jersey-knit lightweight fabric. Crew neck with a stitched V-notch neck detail. Long sleeve. Gender: female. Age Group: adult. Material: COTTON.