Abstract: One aspect of the invention is to provide a composition comprising a titanium dioxide particle having on the surface of said particle a substantially encapsulating layer comprising a pyrogenically-deposited metal oxide; said substantially encapsulating layer having on its surface at least one organic surface treatment material selected from an organo-silane, an organo-siloxane, a fluoro-silane, an organo-phosphonate, an organo-acid phosphate, an organo-pyrophosphate, an organo-polyphosphate, an organo-metaphosphate, an organo-phosphinate, an organo-sulfonic compound, a hydrocarbon-based carboxylic acid, an associated ester of a hydrocarbon-based carboxylic acid, a derivative of a hydrocarbon-based carboxylic acid, a hydrocarbon-based amide, a low molecular weight hydrocarbon wax, a low molecular weight polyolefin, a co-polymer of a low molecular weight polyolefin, a hydrocarbon-based polyol, a derivative of a hydrocarbon-based polyol, an alkanolamine, a derivative of an alkanolamine, an organic dispersing age

Abstract: A new clubhead having a plurality of grooves extending between defined boundaries on the face surface of the clubhead has been developed. In one embodiment, two groups of grooves are arranged to only intersect at a vertical boundary that intersects the center of the sweet spot on the face surface to form a chevron pattern within the define boundaries. In an alternate embodiment, the two groups of grooves traverse fully across the defined grooved area of the face surface to intersect to form a plurality of parallelogram-shaped areas within the grooved area.