50% Off Almost Everything Sitewide at ZAGG with code MEMDAY09 at checkout. This is valid through 5/29. Shipping is $2.99 in most cases. ZAGG sells a protective membrane called invisibleSHIELD that protects electronic devices. Note that this coupon does not work in the Inventory Blowout section but appears to work on everything else. Here is a screenshot for your reference. For an example of the purpose it serves, take a look of this video demo.
Originally posted earlier, this is just a friendly reminder as this deal is expiring soon.