Can anyone help me find Isaac's hat?

It's grey and fluffy, has little ears, a small picture of an elephant on the back and pumpkin patch on the front and a strap with velcro that goes under the chin.

It's so cute and warm and now that it's winter and he can actually wear it it's gone missing, I knew exactly where it was all summer now he's worn it once and I cant find the darn thing. I've looked everywhere!