News Michael Phelps Wears Custom Shoes With His Son's Footprint -- See the Adorable Pic! By Jennifer Drysdale 4:34 PM PDT, August 2, 2016 Instagram Michael Phelps his keeping his family with him as he heads off to Rio de Janeiro for the summer Olympics.While the 31-year-old swimmer’s baby boy is too young to stand by his dad in Rio, little Boomer is set to follow in his footsteps -- with a little help from custom Under Armour shoes! RELATED: Michael Phelps' Infant Son Boomer Hits the Pool With His Olympian Father -- See the Pics!Former Olympian and current NBC swimming analyst Rowdy Gaines tweeted the adorable evidence of Phelps' sentimental sneaks: a pair of his shoes with Boomer's footprint inked into one of the insoles."Loving @MichaelPhelps shoes w son Boomer's foot imprint on one of them…so dang cute," he posted to Twitter on Sunday.Loving @MichaelPhelps shoes w son Boomer's foot imprint on one of them...so dang cute. pic.twitter.com/xjCxg2SV2h— Rowdy Gaines (@RowdyGaines) July 31, 2016The decorated Olympian has received tons of support from his new family. In June, Phelps' fiancée Nicole Johnson brought their infant son to cheer him on as he competed in the Olympic Trials."#teamdaddy all day err day!! We LOVE you @M_phelps00 and we're cheering super loud for you!!" she wrote, along with an adorable shot of Boomer sporting a "team daddy" onesie. View this post on Instagram#teamdaddy all day err day!! We LOVE you @m_phelps00 and we're cheering super loud for you!! 💙A post shared by Nicole Michele Phelps (@mrs.nicolephelps) on Jun 28, 2016 at 5:35pm PDT"Mom and I are excited to go watch dad tonight!!" read another post, from Boomer's Instagram account. View this post on InstagramMom and I are excited to go watch dad tonight!!A post shared by boomer phelps (@boomerrphelps) on Jun 28, 2016 at 3:00pm PDT NEWS: Michael Phelps Excited for First Son to See His Last Olympic RacePhelps and his model fiancée welcomed their son in May, just in time for their little one to watch his dad compete in his last Olympics.See more in the video below.Michael Phelps Welcomes a Baby Boy With Fiancee Nicole Johnson -- See The Adorable Announcement!