I used to wear holes in the back of my shoes very quickly, and have to throw them out well before time. It's a common problem. Here how to fix it.
Orthotics can cause posterior heel edge blisters when they sit ever so slightly forward in the shoe. Thankfully, there's an easy fix.
Blisters at the back of the heel are the [...]
Heel edge blisters occur around the heel’s rim. They’re caused [...]
An under heel blister is rather uncommon. When they do occur, they're most often suffered by runners and hikers on downhill terrain.
This post stems from an email I received from a golfer with recurrent heel blisters due to a Haglunds deformity (also known as pump bump) on both heels.