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, versatile men's long sleeve shirt built around a quarter-zip mock neck collar and a smooth, structured fabric. Available in classic Black and White, this pullover top layers easily over base layers or under outerwear, making it a practical choice for spring, autumn, and mild-weather wear. The minimal solid colorway and subtle seam detailing keep the look polished whether you're heading to the golf course, a casual outing, or a relaxed weekend activity.
Product Highlights
Quarter-zip mock neck collar for adjustable ventilation and a refined silhouette
Solid colorway in Black and White — easy to style with a wide range of bottoms
Long sleeves with a clean finish, suitable for layering or standalone wear
Diagonal shoulder seam detail adds subtle visual structure to the front panel
Smooth, mid-weight fabric with a slight stretch for ease of movement
Available in sizes S through 3XL for an inclusive fit range
Fit & Styling
This shirt follows a relaxed straight cut with enough room through the chest and shoulders for comfortable layering. The mock neck sits close to the throat without feeling restrictive, and the quarter zip allows you to open the collar when needed. Pair the White version with dark chinos or joggers for a crisp contrast look, or wear the Black version with matching trousers for a tonal, streamlined outfit. Refer to the size chart — chest measurements range from 102 cm (S) to 122 cm (3XL) — to find your best fit.
Product Details
Fabric: approximately 88% Polyester, 12% Spandex — a smooth performance-blend knit that holds its shape and allows light stretch. Collar: quarter-zip mock neck. Sleeve: long sleeve. Closure: metal quarter-zip. Colors available: Black, White. Sizes available: S, M, L, XL, 2XL, 3XL.
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)
S
63.5
102
43.3
60
M
65
106
44.5
61
L
66.5
110
45.7
62
XL
68
114
46.9
63
2XL
69.5
118
47.1
64
3XL
71
122
48.3
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.
