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.
A laid-back essential for transitional dressing, this oversized plaid long-sleeve shirt brings a classic American workwear aesthetic with a Japanese streetwear edge. The fine-grid tartan check runs across a relaxed, boxy silhouette finished with a curved hem, a single chest patch pocket, and tonal snap-style buttons that add a subtle utilitarian detail. A woven label badge sits above the chest pocket for a clean branded touch.
Product Highlights
Oversized, boxy fit with dropped shoulders for a relaxed streetwear silhouette
Fine-grid tartan plaid pattern available in Dark Navy, Royal Blue, and Orange colorways
Single chest patch pocket with woven logo badge detail
Curved shirttail hem for easy untucked wear
Button-through front placket with tonal buttons
Back yoke panel with center pleat for added ease of movement
Fit & Styling
This shirt is cut with an intentionally oversized, boxy frame — size down if you prefer a more standard relaxed fit, or wear your usual size for the full streetwear drape. It layers naturally over a plain white or black tee and pairs well with straight-leg or wide-leg trousers, cargo pants, or denim. The Dark Navy colorway reads as a versatile neutral, while the Orange and Blue options make a stronger seasonal statement. Wear it fully buttoned as a light overshirt or open over a crewneck for a layered look.
Product Details
Fabric: approximately 65% Polyester, 35% Cotton woven plaid fabric with a smooth, lightweight hand feel. The shirt features a point collar, long sleeves with single-button cuffs, a full-length button front, and a curved hem. Available in sizes M through XXL. Woven brand label at chest pocket.
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)
M
70
128
57
60
L
72
132
58
61
XL
74
136
59
62
XXL
76
140
60
63
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.
