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, minimal long-sleeve shirt built around a structured mandarin collar and a straight button placket. Available in black and light grey, this relaxed-fit piece draws from Japanese streetwear sensibility — versatile enough to wear tucked or untucked, layered under outerwear or worn alone across spring and autumn seasons.
Product Highlights
Mandarin (stand) collar with no lapel for a sleek, collarless silhouette
Full-length button placket with tonal buttons for a refined, understated look
Relaxed, slightly boxy fit with a curved hem and subtle side vents at the cuffs
Chest patch pocket on the grey colorway; clean front on the black version
Lightweight woven fabric with a smooth hand feel — suitable for layering
Available in black and light grey for easy wardrobe integration
Fit & Styling
This shirt is cut with a relaxed, oversized silhouette that sits comfortably on the shoulders without being excessively boxy. The curved hem and side-split cuffs add a subtle design detail visible from the back. Wear it open over a plain tee for a high-street layered look, or button it fully for a more polished, minimalist outfit. It pairs well with straight-leg trousers, wide-leg pants, or dark denim. The mandarin collar makes it a strong alternative to traditional dress shirts when a tie-free, contemporary aesthetic is the goal. Refer to the size chart: size L measures 68 cm in length, 118 cm chest, 48.6 cm shoulder width, and 64 cm sleeve length.
Product Details
This men's collarless dress shirt is constructed from a lightweight plain-weave fabric, estimated at 100% cotton, giving it a crisp yet breathable drape suited to transitional weather. The mandarin collar is lightly structured to hold its shape. Long sleeves with button cuffs and a clean back yoke complete the construction. Available in sizes S through XL.
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)
S
64
110
45.8
62
M
66
114
47.2
63
L
68
118
48.6
64
XL
70
122
50
65
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.
