Classic make up of the Heart of the Hide PRO303 Outfield Baseball Glove in Horween leather. Stiff and non oil treated. H Web and Open Back. 12.75 Outfield Pattern. This glove is great for outfield baseball or also we have seen a lot of competitive softball players use this mitt. The 303 pattern and H Web provides a deep and longer pocket. The stiff Horween leather gives the classic look and feel of the more traditional gloves where more break in is needed.