Personalized Sarcoma Bone Cancer Yellow Ribbon Awareness Youth T-Shirt. Sarcoma bone cancer awareness Youth T-Shirt - Kelly Green walk gear with yellow ribbon logo and hope fight cure message of support. Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.