That term is Pokédex Holder. Professor Oak uses this term to describe a trainer given a Pokédex by a professor in that region ...
Fans and collectors of the popular Pokémon Trading Card Game can protect their belongings with Ultra Pro ’s latest addition ...
"This holder features all of the great benefits you can expect from the ONE-TOUCH EDGE® card protector plus the immediately recognizable Poké Ball design for collectors to show off their coolest ...