Review on Band-Aid Hydro Seal Adhesive Bandages: Waterproof Gel Blister Pads for Heel Blisters, Sterile & Long-Lasting - 6 ct by Justin Fletcher

They were useless. When I travel, I always have problems with calluses on my heels because I walk for hours (sometimes 13 hours a day) and therefore need reliable aids. It wasn't even 13 hours before they started wearing out and falling apart. After a short time my shoes chafed through! He made a hole in the bandage and kept scratching my skin! It was on my right foot; on my left, he just got off clean. It only worked (and only for the pillow) after I put a Nexcare waterproof bandage on it. I don't have to fix the blisters with another brand of plaster. Failure --- at least for my needs. From your requirements, the minimum might be worth trying, otherwise try something else first.