Worldwide Shipping Available Orders are processed within 1–3 business days and shipping costs are calculated at checkout. Tracking information will be sent once your order has been dispatched.
Estimated Shipping Times Estimated delivery times vary by destination:
USA & Canada: 7–12 business days
Germany & UK: 3–9 business days
Europe: 5–12 business days
Asia Pacific: 10–20 business days
Australia: 8–15 business days
Typical delivery times are 3–12 business days, depending on the destination. Please note that actual delivery times may vary due to customs, carrier delays, or peak shipping periods.
Shipping Protection Shop with confidence — every order is covered by shipping protection from dispatch to delivery. In the event of loss or theft, we offer a full refund or complimentary reshipment.
Shop with confidence — we offer a 30-day money-back guarantee and accept returns within 30 days after delivery for eligible items that are unused, in their original packaging, with tags attached. If your item arrives damaged, defective, or incorrect, please contact us and we’ll work with you to make it right.
For quality-related issues or shipping mistakes on our side, we’ll cover the return shipping cost. Approved refunds are issued to your original payment method within 1–3 business days after inspection.
This acid-washed long-sleeve Henley shirt delivers a lived-in, vintage-inspired aesthetic through its deliberately distressed wash finish and bold mixed-fabric construction. The body is cut from a heavyweight cotton jersey with a washed and worn-in surface texture, while the lower sleeves are crafted from a contrasting plaid flannel fabric — creating a convincing faux two-piece layered look in a single garment. A three-button Henley placket at the chest and subtle pintuck detailing down the front panel add refined structure to the relaxed silhouette.
Product Highlights
Faux two-piece design: solid acid-wash jersey body with contrasting plaid flannel lower sleeves
Three-button Henley neckline with a clean band collar for a smart-casual finish
Vertical pintuck detailing along the front chest panel adds visual interest and texture
Acid-wash and garment-dye treatment gives each piece a unique, worn-in appearance
Available in two colorways: washed black with red tartan sleeves, and olive green with dark khaki plaid sleeves
Relaxed oversized silhouette suitable for layering or wearing as a standalone top
Fit & Styling
This shirt is cut with an oversized, boxy fit — the chest measurements run wide (114 cm at size S up to 126 cm at XL), making it ideal for a relaxed streetwear look. Wear it untucked over straight-leg jeans or cargo pants for an effortless American casual aesthetic. The faux-layered sleeve detail means no extra layering is needed, keeping the outfit clean and intentional. Those who prefer a more fitted look may wish to size down. The olive colorway pairs well with earth-tone bottoms; the black version works with darker denim or black trousers.
Product Details
Material: approximately 80% Cotton, 20% Polyester (jersey body); plaid sleeve panels in a cotton-blend flannel weave. The garment features a band (Mandarin-style) collar, three-button Henley placket, pintuck front detailing, contrast plaid lower sleeves, and a straight hem. Brand label: Extreme Cause. Available in sizes S–XL. All measurements are garment measurements in centimeters.
Size Guide
Use the measurements below as a guide and compare them with a similar item you own.
Size
Length (cm)
Chest (cm)
Shoulder (cm)
Sleeve (cm)
S
70
114
48
64
M
72
118
49
65
L
74
122
50
66
XL
76
126
51
67
How to Find Your Perfect Size — Every Time
How to Find Your Perfect Size — Every Time
Struggling to pick a size online? Here's a simple trick: instead of guessing, use a piece of clothing you already own — and love the fit of — as your reference point.
Step 1: Pick Your Reference Item Think of a T-shirt you've bought before that fit you perfectly. Find that order and pull up its size chart.
Step 2: Focus on Two Key Measurements For streetwear-style tees, two numbers matter most:
Chest width— too narrow and it'll feel tight
Length— too long and it'll look sloppy
💡 Tip:Size charts sometimes list "Chest" as theflat-lay widthinstead of the full circumference. Here's how to tell the difference:
Large number(e.g., 49in / 124cm+) → likely the actual chest circumference
Small number(e.g., 24in / 62cm) → likely the flat width (garment laid flat and measured edge to edge)
Step 3: Note Your Ideal Numbers Write down the chest and length measurements from your best-fitting shirt. Care about sleeve length or shoulder width too? Note those down as well.
Step 4: Match to Our Size Chart Now check Seakoff's size chart and pick the size whose measurements are closest to your notes. That's it — no more guessing.
Works for Everything This same method applies to hoodies, sweaters, jackets, and more. Do it once, and you'll be able to shop confidently, anywhere — every time.
