4.8/5 · Trusted by 43,000 customers

Men's Long Sleeve Knit Polo Shirt

$49.99
Color Navy
Size XS
Almost sold out
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The polo that sits between a shirt and a sweater. Knitted from a fine-gauge cotton with a soft, smooth hand, it has the structure to look sharp and the ease to wear all day. Where the dress shirt is your formal piece, this is the smart-casual one: polished enough for the office, relaxed enough for the weekend.

Fabric and feel

  • Fine-gauge knit cotton, soft and smooth against the skin
  • Breathable with natural give and good recovery, so it moves with you
  • Knit to hold its shape and resist bagging at the elbows and hem

Cut and construction

  • Tailored knit fit that follows the body cleanly without clinging
  • Ribbed polo collar that stands neat and holds its line
  • Three-button placket with subtle tonal buttons
  • Ribbed cuffs and hem for a structured, finished edge
  • Clean, flat seams throughout for comfort and durability

Three colors, three moods

  • Navy: the anchor. Sharp under a blazer, easy on its own, works with everything.
  • Stone: the quiet one. A warm neutral that leans into the understated, off-duty look.
  • Charcoal: the modern one. Clean and versatile, dresses up or down without effort.

Styling Wear it under a tailored jacket for smart-casual, or solo with chinos, trousers, or clean denim. The kind of piece that carries a full day without trying.

Fit and care

  • True to size with a tailored knit cut. Prefer a looser feel? Size up.
  • Machine washable. Wash cold, reshape, and lay flat to dry to keep the knit crisp.
An Atelier Sebastian order, wrapped in tissue with a thank you card

With every order

Our 40-day promise.

Checked by hand

Every order is inspected and folded by a person before it ships. If it is not right, it does not leave.

40 days to decide

Take your time at home. You have 40 days from delivery to return or exchange, with no restocking fees.

Tracked to your door

Dispatched promptly and tracked from our door to yours, so you always know exactly where your piece is.

Trusted by 43,000+ customers

Worn, kept, and rated.

Rated 4.8 / 5

Customer photo

Got two Valbruno shirts (brown and light blue), the linen is not as scratchy as other brands and fit well. Overall the service was great.

Harry Ward Verified Purchase
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Lovely flats! Was really pleased how snug they fit.

Deborah Peckham Verified Purchase
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I absolutely love their dresses at Sebastian... I think it is well worth the price compared to other brands.

Rihanna P. Verified Purchase
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Nice shirt.

Ben Haffner Verified Purchase
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Came within a week, size was running on the smaller side so contacted support. They were quick to resolve with a free exchange.

Karl Verified Purchase
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I'm really pleased with these shoes from Atelier Sebastian. They arrived within six days and felt comfortable from the first time I wore them. The orthopedic support is excellent and has made a noticeable difference to how supported my feet feel throughout the day. They also look stylish, which can be hard to find with supportive footwear, so I would definitely recommend them.

Nyakim Verified Purchase