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 Long-Sleeve "09" Mesh Jersey delivers authentic athletic energy straight into your streetwear rotation. Bold oversized "09" numerals dominate both the front and back, outlined in contrasting colors for maximum visual impact. A script "Growing" wordmark sits above the number, while patch-style logos on the chest and sleeve add a layered, collectible feel reminiscent of classic team jerseys.
Breathable Mesh Construction
Built from 100% polyester mesh, this jersey is designed to keep you comfortable whether you are wearing it on the move or styling it as a statement layer. The open-weave fabric provides lightweight breathability, and the relaxed long-sleeve fit gives you room to move without sacrificing a clean silhouette. The V-neckline keeps the look sharp and easy to style over a tee or under an open overshirt across multiple seasons.
Four Colorways, One Versatile Silhouette
Available in black, white, navy, and forest green, each colorway features its own accent palette so you can match your personal aesthetic. Sleeve number prints and woven patch logos complete the authentic uniform-inspired look. Pair it with cargo pants, wide-leg denim, or athletic shorts for an effortless streetwear outfit.
Size Guide
M: Length 27⅛ in (69 cm) | Chest 51⅛ in (130 cm) | Shoulder 22½ in (57 cm) | Sleeve 21¼ in (54 cm) L: Length 27½ in (70 cm) | Chest 52¾ in (134 cm) | Shoulder 22⅞ in (58 cm) | Sleeve 22 in (56 cm) XL: Length 28⅜ in (72 cm) | Chest 54⅜ in (138 cm) | Shoulder 23⅝ in (60 cm) | Sleeve 22½ in (57 cm)
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.
