Shield saddle cutout "mud guard" keeps dirt out of your [saddle] crack
✦ NabkaNews BriefAuto-summarized from multiple outlets · verify with the source
A product called the shield saddle cutout, also referred to as a "mud guard", is designed to keep dirt out of the saddle crack. The purpose of this product appears to be to prevent dirt from accumulating in a specific area. The shield saddle cutout seems to be intended for use on a saddle, likely for a bicycle.