We use a water-proof gloss finish on our credit card decals and a 'permanent' adhesive which sets after 20 minutes (in case you don't cleanly apply it on your first attempt. Also, when you are ready to swap to a different design it easily comes off with rubbing alcohol. 

Ships with Lettermail (in a plain-white envelope) - tracked via "EasyPost"; most letter mail takes 5-8 business days to arrive. Any issues with delivery please reach out and let me know. If you need it faster or a more reliable shipping method you can upgrade to Ground Advantage or Priority Mail at checkout.