For the guy who doesn’t just show up—he shows up in style. The Earthline KoaTech™ Hawaiian Button-Down Shirt is made for confident men who appreciate clean design, grounded tones, and a cultural edge. With its grid-like layout and earthy color palette, this shirt channels the visual rhythm of woven mats and structured tapa motifs—timeless Pacific energy reimagined for modern life.

Whether you're heading to a summer wedding, catching up at a BBQ, or just want a go-to shirt that feels different from the crowd, Earthline brings texture, tone, and effortless class to any setting.

Shopping for a hard-to-buy-for dad? This is the one. It’s cool, confident, and built for the long haul.

KoaTech™ is our ultra-light, digitally-printed poly-stretch poplin (97% polyester / 3% spandex) we specify for all of our Hawaiian shirts. We use a double print pass and a highlight white ink for extra pop.

Same fibers, different finish: we run every metre through a triple-wash and heat-cure process that locks color deeper into the yarn, softens the hand-feel for flowy breathable shirts, and gives the cloth its subtle four-way flex. Each item is individually inspected several times during the pre-treatment and printing process. The result is a fabric that wears cooler, drapes cleaner, and holds its color after endless beachside washes—something off-the-rack blends just can’t match.

Product Features:

• AOP Statement: 360° geometric tapa-inspired design in sunbaked clay and warm neutral tones
• Black-out Inner Collar & Placket: Because the right contrast makes colors sing
• Tailored Contrast Collar & Placket: Framed in deep black poplin for a sharp, refined finish
• Signature Shadow-Lining: Inner yoke and placket reveal subtle black contrast only when worn open—never loud, always polished
• Sweat-Smart Design: Black interior hides perspiration and sunscreen marks on hot island days
• Structural Memory: Denser lining adds snap-back so collars stay crisp—not floppy
• Our Stealth Pocket Logo: A wink to those who know The Koko Samoa story
• Flowy Fabric Blend: Lightweight and breathable—97% polyester, 3% spandex for comfort with structure
• Packaging Control: Folded with backerboard and shipped in self-sealing poly bags. Cardboard boxes used for multi-product orders

Care Instructions:

• Machine wash cold (max 30°C / 90°F)
• Tumble dry low
• Do not bleach

For confident men, cool dads, and collectors of culture—this one’s made to wear and made to last.

This product is made to order, allowing us to reduce waste and partner with the closest facility to your location for faster shipping. Because each item is made just for you, all sales are final, and we cannot offer refunds or exchanges. Please review your order carefully before purchasing.

Read our full shipping policy here

Australia: 7 - 10 business days

New Zealand: 10 - 14 business days

United States: 7 - 10 business days.

*Shipping to Alaska, Hawaii, Puerto Rico and unincorporated territories of the United States can take additional 7 – 12 business days.