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.
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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.
This retro-inspired colorblock track jacket blends Y2K athletic aesthetics with a cropped, boxy silhouette. Featuring a stand-up ribbed collar, full front zip, and bold color-blocked panels, it draws on classic varsity and motorsport styling. Available in two distinct colorways — heather grey with orange and dark brown with olive green — each version is finished with contrast stripe detailing along the sleeves and a woven "Sport Mershier / Sportsmanship" graphic patch across the chest.
Product Highlights
Retro Y2K colorblock design with contrasting raglan sleeves and front body panels
Stand-up ribbed mock neck collar with stripe trim detail
Full-length front zip closure for easy on and off
Woven brand graphic patch at chest: "Sport Mershier / #Sportsmanship"
Dual side slit pockets at the lower front panel
Cropped boxy fit with ribbed hem and cuffs for a structured finish
Fit & Styling
This jacket runs with a relaxed, cropped boxy fit — it sits at the high hip and is designed to be worn with a slight oversized feel. It pairs naturally with high-waisted joggers, wide-leg trousers, or straight-leg jeans. The stand collar and zip-up front make it easy to layer over a fitted tee or wear as a standalone top. The olive-brown colorway leans earthy and vintage; the orange-grey version reads bold and sporty. Both work well for casual streetwear, campus looks, or athleisure outfits.
Product Details
Constructed from a waffle-textured knit fabric on the body panels and a smooth jersey on the sleeves, this jacket has a mixed-texture construction typical of retro track tops. Material composition is approximately 65% Polyester, 35% Cotton. Measurements are taken flat; a 1–3 cm variance is within normal range. Size data is theoretical — refer to actual garment measurements when available.
Size Guide
Use the measurements below as a guide and compare them with a similar item you own.
Size
Length (cm)
Chest (cm)
Sleeve Length (cm)
Cuff (cm)
M
50
115
74
19
L
51
119
75.5
20
XL
52
123
77
21
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.
