Kong Dog Harness Purple Medium

Pre-owned & used 3 times! Went to put it on last week & it did not fit! I thought I bought a Large but looks like a medium Harness measures 25" around girth (around his chest) My fur baby is 70 pounds so it will not fit him! Guessing 50-60 pound would fit or smaller as it is adjustable Gently used Sold as is