Yes. Not actually fragile, the "interstice" is very susceptible to drying out. When dealing with Vintage NOS unworn shoes, reptile pairs are often "fools gold". While they APPEAR to be in fantastic condition, that area so often is dried out and ready to crack. In batches with both calf and reptile shoes, often the "interstice" of reptile pairs is well dried, while the calf pairs are still relatively soft.