A horseshoe.
unity
Uneasy
unpresumptuous
écu
The shoe laster is a machine that is used to attach the sole and body of the shoe together. This machine was invented by a shoemaker by the name of Jan Ernst Matzeliger. The shoe laster is still used by fine shoe craftsmen today.
UGG is a brand of sheepskin boots
i-poopynoopy shoe by newbalance
Nike (a shoe-making company) makes a shoe starting from the letter "n".
A letter that starts with U is an urgent letter.
insole
letter that starts with u is unicorne
converse, clog
etneys or emues
Vibrams
sneakers
A six letter word that starts with U is upward.
The Ukulele starts with the letter U.