2.4 inches wide x 4.7 inches long x .6 inches thick, with sockets collapsed. The .6 includes a protective lip around the front of the iPhone. I've tried my best to keep the case as thin as possible without compromising functionality. To give you a few points of reference, one case I like, the http://www.case-mate.com/iPhone-4-Cases/Case-Mate-iPhone-4-4S-Tank-Cases.asp, is .75 inches thick; another, the https://www.speckproducts.com/candyshell-card-for-iphone-4.html, is .8 inches thick; and another, the http://www.otterbox.com/iPhone-4-Defender-Series-Case/APL2-I4XXX,default,pd.html?dwvar_APL2-I4XXX_color=20&start=1&cgid=apple-iphone-4-cases, is .67 inches thick. The PopSockets case is thinner and includes two functional, expanding, sockets.