Jack Mackenroth was the recent subject of a Miami photo shoot with visual artist and photographer West Phillips. Modeling Speedo swimwear and Piss & Vinegar underwear, Jack flexes his physique as he’s in-training for US Masters Swimming Nationals and the upcoming IGLA (International Gay and Lesbian Aquatics) Championships to take place in Reykjavik, Iceland in June.

Jack’s 2012 charitable Calendar for a Cure was a success and is now 30% off the original price. That’s 14 months of Jack for only 10 bucks!! As you may or may not know, Jack is considered to be one of the many modern faces of HIV/AIDS today and has done a lot to raise money awareness for the cause.

You can follow him on Twitter (@jackmackenroth) and learn more about his other project on Jackmackenroth.com. For now though, check out his super hot photos from the photoshoot below. He certainly “fills out” the jockstraps, speedos, and underwear that he’s sporting.