WONDERING GREY (LIMITED EDITION)- K9 PTSD CENTER Sweathshirt- This custom blend medium weigth sweathshirt is great for all weather wearing. Durable and strong just like the K9 you are supporting with your donation. Limited edition. We call this color Wondering Grey, because its nice to drift off once and a while to wonder for the K9 at the center. PLEASE NOTE: Your apperal might arrive with dog hair on it.