Nanairo Monkey Men's Brief redefine underwear as a vibrant celebration of pride, diversity, and self-expression. Part of Hero Colors’ exclusive limited-edition lineup, these low-rise briefs embody the spirit of the rainbow flag—six iconic colors plus a secretive "plus-one" shade. This hidden premium color, tied to love and sexuality with a heart-shaped nod, transforms these multi-hued pants into a subtle yet powerful emblem of inclusivity, far beyond ordinary rainbow undies.

Available in two distinct styles:

• Prism Monkey: Inspired by a prism splitting light into a spectrum, this design radiates every color within. It revives a "lovely" hue missing from modern rainbow flags, whispering affection through its clever monkey print. Ageless rather than genderless, it’s a playful, freeing choice for all—young or young-at-heart. The quirky multi-color pattern keeps your spirit light and bold, perfect for everyday joy.


• Planet Monkey: Born from the universe’s infinite palette, this style scatters rainbow shades across a black-and-white cosmos, like a monkey nebula in the night sky. The standout pink—once a sexuality symbol in the original rainbow flag—shines against the dark, blending girly charm with unexpected masculine edge. Cute yet dreamily erotic, it’s a cool, offbeat take on multi-color pride that deepens your "under-space" connection.


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These low-rise briefs fuse retro-pop friendliness with practical design. The 3D hero pouch offers a front opening, ensuring comfort and flexibility without the flat, restrictive feel of typical briefs. Made for Japanese proportions, the moderate low-rise cut provides a wide range of motion and a secure yet relaxed hold—ideal for active days or casual wear. Simple yet striking, the daily-friendly design pairs with mood-matching color options, empowering your inner hero effortlessly.

Crafted at Renown Inx’s Wakayama factory in Japan, Nanairo Monkey boasts top-tier quality. The 95% cotton, 5% polyurethane fabric—a soft, breathable bare jersey—fits like a second skin with gentle stretch, wicking moisture to keep you fresh year-round. The super-soft waistband (70% nylon, 25% polyester, 5% polyurethane) features brushed lining for a smooth, irritation-free feel, even after hours of wear. Passing Japan’s rigorous tests for colorfastness, shrinkage, and durability, these non-formalin briefs promise lasting vibrancy and safety.

From S to XL (waist 68–104 cm), Nanairo Monkey Men's Brief invite everyone to embrace their colors with confidence. Slip into these pride-packed undies and let your unique heroism shine—day or night!