Gray Jansport backpack with pink zipper

I lost my gray Jansport backpack yesterday around 3pm outside the Starbucks on Market Street in downtown Sandusky. It's a medium-sized gray canvas Jansport bag with a bright pink zipper and a slightly frayed bottom corner. Inside there's a blue stainless steel water bottle, a spiral notebook with a green cover, and a small enamel panda pin on the strap. I know it’s not just stuff—this bag has sentimental value; it was a gift from my sister last year, and I really need it back.