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USA & Canada: 7–12 business days
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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.
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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 men's long sleeve oversized shirt delivers a high-street layered look through a clever faux two-piece construction: a dark indigo denim outer shirt is spliced with a blue plaid flannel-style collar and hem, creating the appearance of two shirts worn together in one relaxed, easy-to-wear piece. The result is a casual yet considered aesthetic that suits streetwear and smart-casual dressing alike.
Product Highlights
Faux two-piece design combining dark denim body with blue plaid collar and hem splice
Relaxed oversized silhouette with dropped shoulders for a contemporary street fit
Single chest patch pocket on the denim front panel
Button-through front placket with tonal snap-style buttons
Long sleeves with clean cuffs, suitable for layering over a white tee
Available in sizes M through XXL with generous measurements across chest and shoulder
Fit & Styling
Cut in an oversized, boxy silhouette, this shirt is designed to be worn loose and untucked. The dropped shoulders and wide chest give it a relaxed street feel without looking shapeless. Pair it open over a white crew-neck tee with wide-leg trousers or chinos for a layered look, or button it up fully to let the plaid collar and hem do the talking. The model is shown wearing size M (chest 125 cm, shoulder 51.5 cm, length 73 cm, sleeve 59 cm). If you prefer a closer fit, consider sizing down one size.
Product Details
Fabric composition: approximately 98% Cotton, 2% Elastane — a medium-weight denim fabric with a slight structure that softens with wear. The plaid splice panels use a lighter cotton flannel-style weave. Available in Blue. Sizes M, L, XL, and XXL. Please refer to the size chart for exact garment measurements before ordering.
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
73
125
51.5
59
L
75
129
53
60.5
XL
77
133
54.5
62
XXL
79
137
56
63.5
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.
