A man wearing the Dandy Del Mar The Sebastian LS Polo Shirt in Amethyst holds scissors in one hand, rings visible on his fingers.
The Sebastian LS Polo Shirt - Amethyst by Dandy Del Mar is a men’s long sleeve knitwear piece in dark maroon with a sweater knit texture and ribbed hem and cuffs, shown laid flat on a white background.
A close-up of The Sebastian LS Polo Shirt in Amethyst by Dandy Del Mar, size medium, highlights refined men's knitwear details with a textured maroon finish, collar, and visible brand tag.
Close-up of The Sebastian LS Polo Shirt in Amethyst by Dandy Del Mar, featuring textured knit, V-neckline, and ribbed trim that highlight the refined details of modern men’s knitwear.
Close-up of The Sebastian LS Polo Shirt in Amethyst by Dandy Del Mar, highlighting the maroon waffle-knit texture and soft folds that showcase its premium quality.
The Sebastian LS Polo Shirt - Amethyst
A man in sunglasses wears the Dandy Del Mar Sebastian LS Polo Shirt in Amethyst and patterned pants, standing by a potted plant and stairs, with a circular wall cutout behind him.
A man in The Sebastian LS Polo Shirt - Amethyst by Dandy Del Mar, checkered pants, black loafers, and sunglasses sits on tiled steps by a potted plant against a neutral-toned backdrop.
A man with short dark hair and a beard wears black sunglasses and the Dandy Del Mar Sebastian LS Polo Shirt in Amethyst, standing indoors before an arched background.

The Sebastian LS Polo Shirt - Amethyst

51% off
Sale priceRegular price $325.00$160.00
Colorway
Colorway: Amethyst
Size

Final Sale

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Handsomely trimmed from the softest sweater-knit cotton, the Sebastian Long Sleeve rounds out the seasonal solar shift with a robust long-sleeve design, featuring deep and richly textured Amethyst tones.

Taken alone, the Sebastian is a charming statement piece for a cool coastal drive. Layered with DDM’s suave linen blazer, the sketch becomes slightly more refined.

Once again Dandy’s eye for the timeless achieves perfect focus, resulting in an expertly crafted long sleeve polo to add to the essential knitwear collection.

Designed with love in California.

DETAILS

* Long Sleeve
* Sweater Knit Polo
* Textured Finish
* Ribbed Cuffs, Hem, and Collar
* Open Fold Over Placket
* 100% Cotton
Free Exchanges, Easy Returns, 7-Day Price Guarantee

We’re happy to offer an extended holiday return window through January 15, 2026.

  • Free shipping on U.S. orders over $150.
  • Free prepaid return labels for all U.S. returns.
  • Most orders ship within 1 business day.

If something isn’t right within 30 days, choose:

  • Free exchange
  • Free store credit
  • Refund to original payment method (minus a 9% restocking fee)

Markdown items (slash-through pricing) are eligible for exchange or store credit only. Full-price items remain eligible for refunds to original payment method, even if a discount code was used(restocking fee applies).

View full Return & Refund Policy

7-Day Price Guarantee

If our price drops within 7 days of your purchase, we’ll match it. Contact support with a screenshot and your order number.

Australian & International Orders

  • Free Express International Shipping for Australian orders over A$350 (arrives in ~3–10 business days).
  • All duties/taxes calculated at checkout.
  • Exchanges not currently offered for Australian orders.
  • Returns accepted from Australia via your chosen carrier. Returns must be sent DDP (Delivered Duty Paid); shipments requiring unpaid duties will be refused and returned to sender.

Pairs well with