Reliable, waterproof, easy-to-use SealLock™ closure (works like the zip-closing on freezer bags) keeps electronic devices safely sealed away from damaging moisture. Clear PVC-free windows on both sides of the case allow use of items inside without opening. A simple way to protect your valuable electronic devices. Inside Dimensions: Small (3.5"×5.5"), Medium (5.5"×7.5"), Large (8"×11.5"). Grey.