This page of the Outriders guide is dedicated to moving items between characters using a stash. Once you pick up an item, the game allows you to transfer it to the alternate character.
A stash, like the one pictured below, allows you to store items as well as transfer equipment between characters.
In Outriders, it is possible to create more than one hero on a single account, so transferring items to another character may prove useful. To move an item, open the stash and move the item you are wearing to the stash. Now you can switch to another character and you can pick up that item from the stash. Remember that every item has requirements - most of the time, it concerns the level of the item. When you transfer an item, all restrictions are retained.