Shamrock St Patricks Day Hawaiian Shirt for Men — Shamrock Harp Flag all-over print flat lay
Shamrock St Patricks Day Hawaiian Shirt for Men — Shamrock Harp Flag styled on model
shirt print detail — Shamrock Harp Flag
button-down collar detail — Shamrock Harp Flag Hawaiian shirt
shirt fabric detail
Shamrock St Patricks Day Hawaiian Shirt for Men — Shamrock Harp Flag all-over print flat lay
Shamrock St Patricks Day Hawaiian Shirt for Men — Shamrock Harp Flag styled on model
shirt print detail — Shamrock Harp Flag
button-down collar detail — Shamrock Harp Flag Hawaiian shirt
shirt fabric detail

St. Patrick'sShamrock Harp Flag Classic St Patricks Day Hawaiian Shirt for Men

$79.99 $39.99 -50%
POPULAR over people have bought this product in the last 24 hours.
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Step into parade season and Irish-inspired celebrations with our Shamrock Harp Flag Classic St Patricks Day Hawaiian Shirt — an all-over harp, shamrock wreath, and Irish flag pattern on a bold black base designed for men who want comfort and style without compromise.

The traditional button-down collar gives a clean, polished silhouette that wears equally well for St Patricks Day parades, pub nights, and weekend gatherings. The Shamrock Harp Flag Classic St Patricks Day Hawaiian Shirt brings together crisp monochrome artwork with meaningful Irish motifs, making it easy to wear for festive events without feeling like a costume. Whether you're styling it with chinos for an evening out or open over a tee for casual daily wear, this men's Hawaiian shirt is built for the moment — and the photo.

  • All-over print: harp, Irish flag, and shamrock wreath artwork create a standout St Patricks Day hawaiian shirt look.
  • Traditional button-down collar — clean, polished silhouette
  • Lightweight, breathable fabric with a soft hand feel
  • Reinforced stitching and durable button-front closure
  • Sizes XS – 5XL — big and tall friendly
  • Machine wash cold, tumble dry low

Built For: St Patricks Day parades, pub nights, Irish festivals, spring cookouts, family gatherings, casual weekend parties

From at Shirtboom — independent men's Hawaiian shirts designed in the USA, printed on lightweight summer fabric and priced under $50. The Shamrock Harp Flag Classic Hawaiian Shirt stands out with crisp harp illustrations, shamrock wreaths, and Irish flag details set against a bold black base for a festive but polished look.

How does this St Patricks Day Hawaiian shirt fit?
The Shamrock Harp Flag shirt has a relaxed men's fit. Please refer to the size chart above for full chest and length measurements.
Can I wear this for St Patricks Day events?
Yes — the Shamrock Harp Flag St Patricks Day Hawaiian shirt is made for parades, pub nights, Irish festivals, and casual spring parties.
Is the Irish print on the front and back?
Yes, the all-over design continues across the shirt, featuring harp artwork, shamrock wreaths, and Irish flag motifs throughout.
What fabric is this Hawaiian shirt made from?
This St Patricks Day Hawaiian shirt uses lightweight, breathable fabric with a soft hand feel. Machine wash cold and tumble dry low.
Do you offer big and tall sizes?
Yes. The Shamrock Harp Flag Hawaiian shirt is available from XS through 5XL with a big-and-tall-friendly relaxed cut.
What is your return and shipping policy?
We ship to the USA and offer easy returns according to our store policy. Check the product page and checkout for current delivery details.

Shipping Info

Processing Time

All orders are processed within 1 – 2 business days. This includes the time needed to prepare your items, transfer them to our warehouse, and package them with your name and address before shipment.

Shipping Time

FREE STANDARD SHIPPING - ON ORDERS OVER $79.00

Shipping Method Estimated Delivery Window Costs
Standard shipping $6.99

During periods of high demand or extreme weather, shipments may be delayed slightly.

Tracking Number

Once your order has left our warehouse, we will send you the tracking number with the confirmation email so that you can track the package online. For international shipping, tracking may stop once the package is handed over to the country's international carrier.

Return & Exchange

If for some reason you are not happy with your purchase, we will gladly work with you to correct the problems. Items can be returned/exchanged and refunded within 30 days of receiving the product, in the unlikely event of a damaged, defective, or wrong item delivered to you.

Choose Your Style

Classic collar

Classic Collar

Daily Wear

A timeless printed shirt style with a clean and versatile collar shape. Perfect for everyday wear, casual outings, vacations, and smart-casual occasions while showcasing the same standout all-over print design.

  • Same printed design with a classic collar silhouette
  • Best for everyday styling
  • Great with jeans, chinos, and shorts
  • Recommended if you want a safe classic choice
Cuban collar

Cuban Collar

Most Popular

A relaxed printed shirt style with an open resort-inspired collar. Ideal for beach vacations, summer parties, BBQs, and holiday looks, featuring the same bold all-over print in a more laid-back silhouette.

  • Same printed design with a relaxed open collar
  • Best for summer and vacation vibes
  • Perfect for standout prints
  • Recommended if you want the signature look

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• Safe Payments

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Accepted payment methods

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Learn more about payment methods

• Secure Logistics

1. Real-time order tracking. Once your order ships, you'll receive an email with a tracking number. Follow your package end-to-end at Track Your Order.

2. Package protection. If your package is lost, damaged, or stolen in transit, we'll resend the item or issue a full refund — no questions, no return required. Just contact us within 30 days of the ship date.

3. Discreet packaging. Orders ship in plain mailers without product images or pricing on the outside.

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ShirtBoom respects your privacy and is committed to protecting your personal data. We use industry-standard physical, technical, and administrative safeguards to keep your information secure, and we never sell or rent it to third parties. You can request access, correction, or deletion of your data at any time.

Read our full Privacy Policy

Size Guide

Relaxed Hawaiian fit. This shirt is designed with extra room through the chest and body.

  • Choose your usual size for a classic relaxed vacation fit.
  • If you are between sizes or prefer a cleaner fit, we recommend sizing down.
  • If you have broad shoulders, a larger chest, or prefer extra room, choose your usual size.

Measurements are garment measurements, not body measurements.

Fit Feedback

Real measurements from real ShirtBoom customers — use this to gauge how our sizes wear on different body types.

CustomerChestWaistWeightHeightSuggested SizeExpected Fit
Tyler G**104cm / 41″91cm / 36″81.6kg / 180lb173cm / 5′8MGreat / Relaxed
Marcus C**99cm / 39″71cm / 28″72.5kg / 160lb175cm / 5′9XSClean Fit
Daniel P**104cm / 41″84cm / 33″72.5kg / 160lb178cm / 5′10SGreat / Clean Relaxed
Jordan W**99cm / 39″104cm / 41″80kg / 176lb163cm / 5′4LLoose
Eric S**110cm / 43.3″100cm / 39.3″85kg / 187lb173cm / 5′8XLLoose
Size Chart
SizeChestShoulder WidthBottom OpeningShirt LengthSleeve Length
XS43″17.8″41″29″9.2″
S45.5″18.5″43.5″29.5″9.5″
M48″19.0″46″30″9.8″
L50.5″19.8″48.5″31″10.2″
XL53.5″20.8″51.5″32″10.5″
2XL56″21.8″54″33″10.9″
3XL59″22.8″57″34″11.3″
4XL62″23.8″60″35″11.6″
5XL65″24.5″63″36″11.9″
SizeChestShoulder WidthBottom OpeningShirt LengthSleeve Length
XS109451047423
S116471107524
M122481177625
L128501237926
XL136531318127
2XL142551378428
3XL150581458629
4XL157601528929
5XL165621609130
How to Measure
Shirt measurement diagram with 5 numbered measurements

1. Chest

Measure the full circumference around the chest at the fullest part, just under the arms — keep the tape level all the way around.

2. Shoulder Width

Measure straight across the back, from one shoulder seam to the other shoulder seam.

3. Bottom Opening

Measure the full circumference around the bottom hem opening of the shirt — all the way around, not just edge to edge.

4. Shirt Length

Measure from the highest point of the shoulder seam straight down to the bottom hem.

5. Sleeve Length

Measure from the shoulder seam down the outside of the sleeve to the cuff edge.

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