Do not oil your Mizuno Catchers glove "GMP 20" as the leather is already treated. First, put your glove hand inside the mitt and squeeze, while at the same time use your opposite hand and help close the mitt working the stiff inner part of the glove to close. Do this at least 1000 times throughout the day. When you are not squeezing and working the glove with both hands, put a Baseball inside your Mizuno mitt and close it shut. Then, get some old baseball socks and wrap it around your mitt securing it shut in the closed position and let it sit overnight. Do this for about a week and your clove should be good to go.
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