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 clean, understated long-sleeve tee built around a speckled nep fabric and a distinctive red center seam that runs from collar to hem on both front and back. The mock neck collar and boxy relaxed silhouette give this piece a quiet, design-forward feel that sits comfortably between casual and smart-casual dressing.
Product Highlights
Speckled nep texture adds visual depth without bold graphics or prints
Signature red center seam detail on front and back for a subtle design accent
Mock neck collar for a refined, collarless look
Relaxed boxy fit with clean, minimal lines
Available in Heather Grey and Off-White — both versatile, easy-to-style neutrals
Long sleeves suitable for spring and autumn layering
Fit & Styling
The relaxed boxy cut sits away from the body for an easy, comfortable wear. It works well worn alone over slim trousers or chinos, or layered under an open overshirt or light jacket. The mock neck keeps the look polished without a collar. Size up if you prefer an oversized drape; the standard sizing already runs with generous chest and shoulder measurements. Refer to the size chart for exact measurements before ordering.
Product Details
Fabric: 85% Cotton, 15% Polyester — a cotton-dominant nep jersey blend that gives the fabric its characteristic speckled surface and comfortable mid-weight hand feel. Available in sizes M, L, and XL. Brand: BLACKE78.
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
66
108
43
64
L
68
112
45
65
XL
70
116
47
66
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.
