Cotton String Sports Briefs with an anatomical bulge that gives the free hanging appearance you see in the images. See the prompt below to help you recreate the look in the images. Depending on the checkpoint the cotton may appear slightly sheer. Enjoy!

Add this to your prompt for a great bulge (can be used for any underwear bulge, btw):

realistic bulge, anatomical pouch contour, soft fabric tension, gentle shaft curve, subtle glans hint, low-hanging shape implied, snug stretch at top of pouch, masculine fullness, natural bulge shadow

Also add this to your negative (ideally not at very beginning or end of your negative prompt.) If you encounter problems reduce or remove the weights:

anatomy, female bulge, woman's bulge, (vagina:1.5), (cameltoe:1.5), pussy, (women's lingerie),

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Add this to your prompt for great cotton material (semi-sheer):

semi-sheer (mottled marled) soft jersey knit athleisure texture flecked blended thread cotton

Optional negative (only if the prompt above is struggling):

shiny, latex, leather, pvc, mesh, glossy, plastic, armor, satin, denim, cut-outs, skin-tight