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.
The Seakoff Heavyweight Long Sleeve T Shirt is a statement piece rooted in underground streetwear culture. A bold oversized emblem — combining a crescent, star, and hammer motif — dominates the chest in deep navy against a washed indigo base. The tonal print gives it a worn-in, archival quality that looks like it was pulled straight from a vintage poster or an old crew tee. This is the kind of graphic that sparks conversation without trying too hard.
Silhouette and Fit
Cut in a boxy, cropped silhouette, this heavyweight long sleeve hits a modern streetwear proportion that works equally well layered over wide-leg trousers, cargo pants, or worn alone. The structured shoulders and relaxed body create a balanced oversized shape without losing form. The washed finish softens the heavyweight cotton while preserving its structure, giving it that lived-in feel from the first wear.
Material and Construction
Crafted from 100% heavyweight cotton, this long sleeve is built to hold its shape and fade naturally over time. The fabric is soft yet substantial — thick enough to stand on its own through cooler seasons. Details include a clean crew neckline, long sleeves, and a raw cropped hem that keeps the silhouette intentional and sharp.
Size Guide
Size
Chest (in)
Shoulder (in)
Length (in)
Sleeve (in)
M
55 ⅛
24 ¾
24 ¾
24
L
56 ¾
25 ⅜
25 ⅝
24 ⅜
XL
58 ¼
26
26 ⅜
24 ¾
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.
