A vitrified clay (expanded shale and clay) product applied to skinned areas of baseball and softball fields. Diamond Pro® fires its vitrified clay conditioners in a rotary kiln at over 2000° F to produce a premium ceramic substance. Red Infield Conditioner helps create a natural look that enhances the appearance of an infield. 50 . Bags/40 Bags per Pallet. Bulk delivery is available upon request. Please call for pricing.