Polaroid Pocket-Sized Digital Grey Card Set With Quick-Release Neck Strap for Digital Photography<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Includes three color calibrated reference cards (Grey， Black， And White) </span></li><li><span class="a-list-item"> Dimensions 3.2" X 2.2" 0.1" (83 by 50 cm) </span></li><li><span class="a-list-item"> Keep Them Organized On The Inlcuded Neck Strap </span></li><li><span class="a-list-item"> Use With Digital Cameras And Editing Software </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41uiHaV7NTL.jpg" noproxy>