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.
Clean Athletic Design with Contour Panel Detailing
The Seakoff Core Line Cotton Tee is built for those who want a sharp, modern silhouette without sacrificing comfort. Curved contrast seam lines run along the front panels and sleeves, creating a streamlined athletic shape that stands out from basic tees. A minimal chest logo adds a refined branding touch, keeping the overall look clean and versatile.
Pure Cotton Comfort for Everyday Wear
Crafted from 100% cotton, this tee delivers a soft hand feel and natural breathability that holds up through daily wear. The relaxed athletic fit sits comfortably on the body without being boxy, making it easy to wear solo or as a layering piece. Available in navy with white contrast piping and white with black contrast piping, both colorways offer a polished sportswear aesthetic.
How to Style It
Pair the navy version with joggers or cargo trousers for a clean street-sport look. The white version works equally well with shorts, denim, or athletic bottoms. The crew neckline and structured seam detailing make this tee suitable for casual outings, gym sessions, or relaxed everyday wear.
Size Guide
Size
Length (in)
Bust (in)
Shoulder (in)
Sleeve (in)
M
28
45
20
8
L
29
47
20
8
XL
29
48
20
9
2XL
30
50
21
9
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.
