Your sandals are probably a regular part of your footwear rotation now that it's summer and you haven't succumbed to blisters. To get your feet back into sandal-ready shape, some podiatrists offered some advice on how to prevent blisters from ravaging your feet in the future. They said always break in your shoes. Think twice about wearing them for your 9-to-5 job the first time you put them on your feet. When buying sandals, make sure the straps don't rub over bony prominences, and make sure the straps are a soft material, which causes less friction. And finally, moisturize the feet as much as possible with Shea butter.