Personalized Dog and Mouse- Best Friends Women's V-Neck T-Shirt. Show off your bestie with Dog and Mouse- Best Friends Women's V-Neck T-Shirt - Aqua, from the children's book "Dog and Mouse" by Michelle Nelson-Schmidt. 5.0 oz., 100% pre-shrunk cotton Athletic Heather is 90/10 cotton/polyester 1x1 rib collar with mitered v-neck Shoulder-to-shoulder taping Ladies' fit