Wear Questions: Sole Separation and/or Deterioration

Below are examples of sole separation and why it may be happening:

  • The shoe is being used for the wrong activity
    • For example, using a running shoe designed for forward motions for sports or activities, such as tennis or soccer
  • Wearing the wrong shoe for your gait
    • Lack of or incorrect technology needed to correct over or under pronation may cause stress on the upper of the shoe
  • Wearing the incorrect size or width
    • Sole may separate near the ball of the foot if the shoe is too narrow
    • A properly fitting shoe should provide about a thumb's width of space between your longest toe and the front of the shoe and the laces should run parallel to each other when the shoes are laced and tied
    • We recommend getting feet measured at least once a year and prior to each new shoe purchase
  • The shoes have not been used for long periods of time
    • Materials start to dry and weaken over time due to exposure to air
    • The foam material and glues may loosen or crumble after sitting for long periods of time
    • We recommend wearing shoes as soon as they are purchased to get the best life out of them
  • Stepping on the back of each shoe to take it off, especially without untying or loosening them first
    • May cause the back of the heel to separate from the upper
    • Outsole may loosen or separate
    • We recommend untying or loosening shoes before taking them off with your hands
  • Machine washing or drying shoes
    • Doing so can compromise the materials of the shoe
    • Sole may separate from the upper
    • Drying shoes can cause the rubber to shrink or warp


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