sure the shoe matches your arch (or heel to ball) length. This
lines up where your toes bend to where the shoe sole is designed to
bend. THIS IS A CRITICAL FACTOR IN GOOD FIT! (read Measuring Your Feet for more).
Select a shoe that matches the shape of your foot.
Try your shoes on standing up. Your feet change shape when you stand on them!
a shoe that feels comfortable right out of the box. It's a myth that they will 'fit better' as you wear them.
Allow for some space between your longest toe and the end of the shoe - typically 3/8"-1/2"
sure there's adequate space at the widest part of your foot (where the
ball of your foot is - where you big toe bends.
heel should fit comfortably in the shoe heel with a minimum amount of
slippage. Heel fit and proper lacing are what holds your shoe properly
in place. Your toes need to have some wiggle space.