2-Piece snap together trading card holders (a.k.a. Snap-tites or Snaptites) are designed for mid to upper mid value cards. They offer sturdier protection than a topload holder, but are less pricey than screwdown holders. Made of acid free polystyrene. The 2 pieces of the holder snap together with the card sandwiched in between in the recessed well area. Available in various thicknesses to accommodate both standard and thick baseball cards or other similarly sized trading cards.