The Razer Diamondback 3G gaming mouse really seemed slender to me, especially the underside of the mouse. It's got the standard Razer logo printed on the top of it and on the underside you can see the feet that help it glide on surfaces. The sides of the mouse have gripping railings on them and either side also has two customizable buttons. The mouse houses a total of seven buttons, so you'll be able to customize it quite a bit.