Nanairo Monkey Men's Sport Underwear are more than just underwear—they’re a bold statement of pride, freedom, and individuality. Designed as a special limited-edition release by Hero Colors, these sport briefs celebrate the rainbow flag’s legacy while adding a playful, premium twist. The name "Nanairo" (seven colors in Japanese) reflects the classic six-color rainbow pride flag, plus a hidden "plus-one" shade—a lovely premium color symbolizing love and sexuality that’s often overlooked. This secret hue, subtly woven into the design with a heart motif, elevates these pants beyond ordinary multi-colored undies into a meaningful symbol of unity.

Available in two unique variants:

• Prism Monkey: Inspired by the prism that refracts light into a spectrum of colors, this version embodies diversity and brilliance. The rainbow shades shimmer with every movement, whispering a message of love through its hidden premium color. It’s ageless and genderless—perfect for anyone who embraces freedom and fun. The quirky monkey print adds a dash of whimsy, making it a joyful choice for all ages.


• Planet Monkey: Drawing from the cosmos, where all colors originate, this design scatters rainbow hues across a black-and-white night sky, evoking a nebula of monkeys. The standout pink—a color tied to sexuality in the original rainbow flag—pops against the dark base, blending girlish charm with unexpected masculine allure. It’s cute yet subtly erotic, quirky yet cool, deepening your connection to "under-space" love.




 
•  
•  

Crafted as sport briefs, Nanairo Monkey combines retro-pop aesthetics with modern functionality. The single-layer stretch fabric offers a snug, supportive pouch for all-day comfort and freedom of movement—ideal for sports, active days, or even under tight suits in hot weather. The side-cut design eliminates bulk, preventing discomfort at the thigh crease during long sits. Its simplicity ensures it’s a daily go-to, while the vibrant color options bring a heroic spark to your wardrobe.

Made in Japan at Renown Inx’s Wakayama factory, these pants boast impeccable craftsmanship. The fabric—95% cotton and 5% polyurethane—delivers a soft, breathable feel with just the right stretch to hug your body without stress. The cotton bare jersey weave is lightweight yet durable, with excellent moisture-wicking properties to keep you fresh year-round. The super-soft waistband, made of 70% nylon, 25% polyester, and 5% polyurethane, features brushed lining for a gentle, irritation-free fit. Every detail, from the 3D hero pouch to the non-formalin finish, meets Japan’s strict quality standards—passing tests for colorfastness, shrinkage, and wear resistance.

Whether you’re young or young-at-heart, Nanairo Monkey Hero Pants invite you to play, love, and live boldly. Sized from S to XL (waist 68–104 cm), they cater to all with a fit that’s both flattering and functional. Slip into these pride-colored undies and let your inner hero shine!