Some are professionals, others are amateurs. Some are smooth, others are hairy. Some are thickly built and packed with muscle, others are lean and strong.
No frontal nudity is shown, so it's safe for work, as long as you're employed in a place where shirtless studs on screen won't cause a panic. A few naked butts are seen on occasion, but only infrequently and always tastefully.
Featured below are eight recent fine specimens of prime slab from the website. And I have first dibs on number one and number six.