This here is the super-colorful Apex Brief from Marco Marco – which, sadly, does not seem to be available any more, although Marco Marco does have their Flux line of underwear that features the exact same paneling pattern as Apex and the exact same fabric makeup, (82% Polyester, 18% Spandex,) just with much lower color variety in any single pair. It’s a bit of a shame, because I love just how colorful these are, notwithstanding how much the neon of these colors pops so much! But at least the Flux line is quite nice too. Also, I can’t find any pictures of the backside of the Apex brief, but the Flux briefs all have this open window on the backside just beneath the waistband, so that’s fun!
I do really love the paneling on this pair. The block colors give a really strong appearance while helping everything “pop” well. The paneling on the pouch in particular provides some visual enhancement to the already-impressive pouch shape, which is great too.