Do this whenever you have free time to change shoes and walk around. Try to do this at least two to three times per day. To find the time to switch between your comfy shoes and the Dr. Martens you’re breaking in, wear your new boots before, after, or during the lunch break of your work day.
Because this is a slower and more time-consuming method, plan ahead. If you want to show off your new Dr. Martens at a particular event, begin this process about a month before that date. Try to wear your Dr. Martens around the house as much as you can (without causing yourself pain). [2] X Expert Source Marc SigalShoe Care Specialist Expert Interview. 15 January 2020.
This may cause creasing in the leather. To avoid noticeable or permanent creases, be sure your leather is properly conditioned before you use your hands to stretch it. Dr. Martens’ has its own product, Wonder Balsam, for this purpose, however, other brands should work just fine as well. Periodically conditioning your boots will also aid in the overall break-in process. Soft and supple leather is much easier to stretch than stiff leather. [5] X Research source
If you’re worried, bring an extra pair of reliable shoes along with you.
Be aware of the areas of your boot that need the most stretching, as this may alter how much water you place in the bag. If it’s a smaller or larger portion, fill the bag with the amount of water that makes it fit comfortably within that space. Use a high-quality plastic bag. You don’t want any water to touch the leather directly, as this will damage your boots. Choosing a bag specifically for freezer use will help ensure that no leaking occurs. [6] X Research source
Just in case you’ve spilled a bit of water while filling or sealing the bag, wipe it off with a dishcloth or paper towel.
Use crumpled newspaper to keep the bag in position. You can use several bags of varying sizes to fill the various portions of your shoe. The toe, in particular, may call for a smaller bag that fully touches the entire front of the shoe.
If the boots still feel loose, try putting on two or three pairs of socks at once.
If the boots still feel loose, try putting on two or three pairs of socks at once.
Each problem spot should receive its own 30-second heat treatment.
Try wearing a thicker pair of socks if you find it necessary to repeat the steps. It’s possible your fit wasn’t tight enough to force the leather to stretch.