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 Black Cotton Long Sleeve Shirt features a distressed "Go Hard Or Go Home" slogan across the chest, a wireframe globe centerpiece, tribal-inspired detailing, and stacked brand marks down the front. This heavyweight graphic-driven shirt delivers the high-energy visual language of motorsport culture translated into everyday streetwear with black base and neon green accents for a raw, standout aesthetic.
Faux-Layered Sleeve Design for a Stacked Look
The standout feature is the built-in layered sleeve construction, which replicates the look of wearing a short-sleeve tee over a long-sleeve base — no extra layering required. Sharp angular graphic lines extend from the chest down to the hem, reinforcing the structured, mech-inspired silhouette. Sleeve prints repeat the "Go Hard Or Go Home" slogan for a fully committed graphic execution from shoulder to cuff.
Everyday Comfort in 100% Cotton
Crafted from 100% cotton, this long sleeve shirt offers breathable, all-day comfort without sacrificing style. The relaxed crew neck and oversized-leaning fit make it easy to style with cargo pants, wide-leg jeans, or layered under an open jacket for a complete streetwear look.
Size Guide
Size
Length (in)
Chest (in)
Sleeve (in)
Shoulder (in)
M
27½
44⅞
23⅝
20⅛
L
28⅜
46½
24
20⅞
XL
29⅛
48
24⅜
21⅝
XXL
29⅞
49⅝
24¾
22½
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.
