Mitt
Rawlings Heart of the Hide PRODCTDC
We recently picked up a key contact at Rawlings, who told us that Paul Goldschmidt’s Rawlings first baseman’s mitt is the first Dual Core glove we’ve seen in the Big Leagues, the exact model at the link above, though with different lacing. You can actually see the “Dual Core” written on the pinky of the glove in the feature. For those wondering, Dual Core offers “position-specific break points in the glove pattern so players can achieve top-level performance customized for their defensive needs.”

Source: Norm Hall/Getty Images North America
Sunglasses
Kaenon Hard Kore in Black with Red Hit/G12 Lenses
Goldschmidt’s Kaenon Hard Kore sunglasses look like they’re blacked out aside from the red Kaenon logo, which is a version we haven’t seen for sale anywhere. The most similar is the “Graphite with Red Hit” version that is available on the Kaenon site.
Below is a photo from back in April when Goldy was wearing the standard black/white version, which is available online, but one that Goldy has switched out for the DBacks red.

Source: Doug Pensinger/Getty Images North America
What were the sleeves everybody was wearingn on the 4th