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 mens black long sleeve t shirt delivers a clean, understated look with a ribbed vertical-stripe texture and a half-button henley placket. The band collar and relaxed silhouette draw on Japanese casual styling, making it an easy layering piece or standalone top for everyday wear.
Product Highlights
Ribbed vertical-stripe fabric adds subtle texture and visual length
Half-button henley placket with a neat band collar for a refined casual look
Relaxed, slightly oversized fit suits a range of body types
Long sleeves with clean, unadorned cuffs
Available in Black and Heather Grey for versatile outfit building
Side hem vents at the hem for ease of movement
Fit & Styling
Cut in a relaxed, slightly boxy silhouette inspired by Japanese minimalist fashion, this shirt sits comfortably through the chest and shoulders without feeling oversized. The hem falls at hip length, making it easy to wear untucked over slim trousers, chinos, or joggers. The neutral colorways — Black and Heather Grey — pair naturally with dark denim, cargo pants, or layered under an open jacket. Refer to the size chart: size M measures 63 cm in length, 108 cm chest, 49.5 cm shoulder width, and 60 cm sleeve length; size XXL measures 69 cm in length, 120 cm chest, 54 cm shoulder width, and 63 cm sleeve length.
Product Details
Constructed from a cotton-polyester blend — approximately 65% Cotton, 35% Polyester — the ribbed fabric provides a soft hand feel with light structure and shape retention. The band collar features a ribbed trim for a polished finish. Available in sizes M through XXL. Colors: Black, Heather Grey.
Size Guide
Use the measurements below as a guide and compare them with a similar item you own.
Size
Length (cm)
Chest (cm)
Shoulder Width (cm)
Sleeve Length (cm)
M
63
108
49.5
60
L
65
112
51
61
XL
67
116
52.5
62
XXL
69
120
54
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.
