With all the features of Blundstone's classic workboot, the 566 includes 3M Thinsulate insulation to provide extra protection against the cold. Blundstone has taken the next step to create a fully waterproof boot by using waterproof elastic and laxtexed seams.  The 566s are easy to slip off and on using the re-inforced pull-tabs and come with a shaped comfort footbed that is fully removable. This boot also comes with a removable sheep skin footbed for extra warmth and cushioning.