Skip to Main ContentSkip to FiltersSkip to FiltersSkip to Footer
Fanatics Canada
  • Select site region
    • Switch Stores
    • Select USA StoreUSA
  • Gift Cards
  • Track Order
  • Help
  • My Account
  • Language
    • English
    • Français
Fanatics
Seattle Mariners
100% Official Merchandise
365 Day Returns
  • men
  • women
  • More
    kids
    jerseys
    t-shirts
    headwear
  • kids
  • jerseys
  • t-shirts
  • More
    headwear
  • headwear
  • accessories
SIGN UP & SAVE!
  1. MLB
  2. Seattle Mariners
  3. Mitchell & Ness
  4. Seattle Mariners Jerseys
  5. Seattle Mariners Replica Jerseys
  6. Ken Griffey Jr.
  7. Throwback Gear
Ken Griffey Jr.
Filter & SortCancel

Your Selections

  • Seattle Mariners
  • Ken Griffey Jr.
  • Mitchell & Ness
  • Jerseys
  • Replica
  • Throwback Gear

Gender/Age

  • Kids

Color/Style

  • Batting Practice
  • Cooperstown
  • Throwback
1 - 3 of 3
Throwback Gear
Top Sellers
72 Items
Kids
  • Seattle Mariners
  • Ken Griffey Jr.
  • Mitchell & Ness
  • Jerseys
  • Replica
  • Throwback Gear
3 Items
  • 1
  • 1 of 1
Ken Griffey Jr. Seattle Mariners Mitchell & Ness Youth Cooperstown Collection Mesh Batting Practice Jersey - Navy
$116.99
Ken Griffey Jr. Seattle Mariners Mitchell & Ness Youth Cooperstown Collection Mesh Batting Practice Jersey - Navy
Most Popular in Kids Jerseys
Ken Griffey Jr. Seattle Mariners Mitchell & Ness Toddler Cooperstown Collection Mesh Batting Practice Jersey - Navy
$102.99
Ken Griffey Jr. Seattle Mariners Mitchell & Ness Toddler Cooperstown Collection Mesh Batting Practice Jersey - Navy
Most Popular in Kids Jerseys
Ken Griffey Jr. Seattle Mariners Mitchell & Ness Preschool Cooperstown Collection Mesh Batting Practice Jersey - Navy
$109.99
Ken Griffey Jr. Seattle Mariners Mitchell & Ness Preschool Cooperstown Collection Mesh Batting Practice Jersey - Navy
Most Popular in Kids Jerseys
  • 1
  • 1 of 1
Kids
Customer Service
  • Contact Us
  • Help
  • Track Order
  • Size Chart
Worry Free Shopping
  • Safe Shopping
  • Shipping Rates
  • 365-Day Returns
Information
  • My Account
  • About Us
  • Affiliate Program
  • Contact Us
  • Help
  • 365-Day Returns
  • Track My Order
Stay updated on sales, new items and more
  • Privacy Policy
  • Your Privacy Choices
  • Accessibility
  • Terms of Use
  • Interest-Based Advertisement
  • Product Concerns
© Fanatics, LLC., 2025. All Rights Reserved. No portion of this site may be reproduced or duplicated without the express permission of Fanatics, LLC.
  • Visa
  • Master Card
  • Amex
  • PayPal
rc:
c09bb08b30e79b90
vid:
5c329c60-884f-11f0-8767-ff7f8bfa05cd
version:
1.1.0-rc-20250901.122798
gsId:
5c329c62-884f-11f0-8767-ff7f8bfa05cd

Show More
  • Qualified Experiments #:

    • Namespaces:

      • 3:4713:0
      • 4:472:0
      • 2:2038:0
      • 6:1274:0
      • 7:3997:0
      • 8:1343:0
      • 9:251:0
      • 10:8273:0
      • 11:383:0
      • 5:4961:0