These boots are comfortable and fairly sturdy but, they are noisy. The synthetic on the tongue squeaks with every step. I have gotten use to it but, at times it can be annoying. Also the side of the soles have a hard plastic portion that is intermixed with a softer spongier material. The hard plastic cracked on both boots which has really had no effect on how they feel however, the ends of the plastic where they cracked began to rub against each other and make a clicking sound with every step. I had to trim some of the plastic to create a gap between the two ends at the break to eliminate this sound. Again, comfortable but noisy!