Clamshells.

Hot Wheels Clamshell Blisters for long card Mainline 1/64.

Hot Wheels Clamshell Blisters Premium for Car Culture, Pop Culture, Retro Entertainment 1/64.

Star Wars & GI-Joe 3.75 inch Action Figures Loose - Collectibles Blisters Clamshell Case Protector.

Display Case Protector for Premium and Matchbox/Hot Wheels 5 Car Case 1/64.

Display Case Protector for Mainline and Matchbox/Hot Wheels 5 Car Case 1/64.