Description: Color:Black Double Sided Transparent Material: PU Style: Vertical Usage: Any small and delicate items. Feature: Cards, Library Cards, Stuff Key Cards, Bus subway Passes etc. Have waterproof function and can provides perfect protection for your ID cards and badges. Keeps your credentials from falling out, and dust. The sleeve dimensions were more than ample to accommodate the badges you needed to protect. With Slot & Chain Holes, they can connect to neck lanyards, keychains, retractable reels or standard ID clips.