AIRTAG USE--Compatible with Apple Airtag (not included)

You can easily assemble the airtag in the hole and fix the cover by screwing with the tools attached. However the operation in instruction is enclosed in the box; NEW DESIGN--2 stretchable bands to connect and hold the front and back aluminum boards with reliable flexibility it is expandable to hold 15cards and couple of bills with better reliability comparing to the others with just one stretch band right for heavy and frequent card users;

RFID BLOCKING--Full aluminum board setting back and front100% reliability to screen any scran signal with any Hz frequency what else can block the signals better than a metal cage? EASY ACCESS--Finger pushing structured you can get cards from any side quickly; one side sliding in and another side using out to take no need to find different cards from excess number of slots as a standard wallet; MINIMALIST-Just One-Card size plus the expandable thickness you can never get a wallet better in space ultilization for the same capacity! with this wallet you can just take and go anywhere in super ease.