Bought our first for our Maggie (passed - Nov 2021). Ruffwear was recommended to us by a local K-9 officer. We checked them out and bought one for Maggie and she loved it! Worked terrific, fit like a dream and really helped keep her cool in the back yard, on walks and runs in summer as well as in the car when traveling. After her passing we adopted 2 pups and got a vest for each. They wear them all the time when out in the back yard (we moved from Ill to Tenn last summer and it is considerably hotter here than back home). They have discovered open water - so our next purchase will be life vests for each to help keep them safe.