Now you can add style to your collection with Bitty POP! accessories! This exclusive 4-pack includes 1 Bitty POP! sloth and 3 Bitty POP! pin cases. Pin Cases. Bitty POP! cases can each hold a Bitty POP! collectible. Take your collection everywhere by attaching these Bitty POP! pin cases to your favourite clothing or accessory. Mix and match your Bitty POP! collectibles in the clear acrylic Bitty POP! clear acrylic cases for even more fun!