b.bloc by blistabloc, is a clear-adhesive insert that goes into your shoes- not on your skin- and prevents blisters over the entire break in process. The inserts are flexible to fit any type of shoe: heel, flat, boot, boat shoe and are odorless, non-toxic, and leave no residue. Each insert is made from sustainable materials that are locally sourced and are sold through blistabloc's website and via boutique shoe retailer partnerships.