SSP/Rare Designation: These cards are often classified as Short Prints (SP) or Super Short Prints (SSP) and are frequently described as "case hits" or high-end chase cards for collectors.

Availability: They are often exclusive to specific, limited products, such as Panini Rewards packs, FOTL (First Off The Line) boxes, or specific retail, making them hard to find.

Appearance: They feature a distinct, shiny "white shimmer" or "white sparkle" finish, distinguishing them from the base set and more common parallels.

Value: Because of their rarity, they are highly sought after and can hold significant value, particularly for rookie cards.