Over time, sheepskin naturally compresses with consistent pressure. To ensure your Ugg boots will last for years to come, we intentionally handcraft our Ugg boots with replaceable innersoles. This unique feature allows our valued customers to replenish the luxurious comfort of our boots when desired without having to purchase another pair. Replacing innersoles increases to longevity of the boots and optimises both comfort and warmth of the boots. You can find our replaceable innersoles here.