Soak it in Glove Oil, put a rubber-coated baseball in the palm and one in the pocket, roll it closed, wrap it with a belt, leave it for 2 weeks in a dry place, but don't put it in a plastic bag (it needs to breath.).
the old school way that us old timers know is you rub the leather with linseed oil, ( mostly in the palm and pocket ares, some on the outside but heavy on the inside, then put a baseball or softball into the pocket and palm and do the few things others mentioned like roll the glove over and around the balls & secure it closed , usually with a leather belt works best or something velcro as to not leave marks. Let it conform to the shape of the balls for a week, two , how ever long before you want to start using it. and yes it has to breath so just like a leather coat or boots etc..no plastic bags.... a brown paper shopping bag is fine though..the paper will soak up excess oil best of luck
I used baby oil, a baseball, and rubber bands. Rub the baby oil all over the front of the glove and place the ball in the palm, wrap several rubber bands around it and put it in the sun for like 3 days. It helps to break down the material better
this is what you do.... take a baseball and put it in the pocket of the glove. put rubber bands, bandanas watever you want to make it stay in place, then place it under your matress for 2-3 days... i did it and my glove works like a charm. Other than that just play catch with the glove, thatll break it in of you consistently use it
There are countless ways that you can achieve the break-in of your new glove but many of those techniques hurt the leather in the long run. What we at JustBallGloves.com recommend is playing as much catch as possible and applying a thin layer of glove oil to the glove weekly or bi-weekly. Here is a link to our video of the ideal glove break-in process.