Boys Kids' Shop by Size for Baseball | Under Armour

Featured
- New Arrivals
- Valentine's Day Edit
- Back to Gym
- Wide Leg Pants
- Race Day Ready
- Short & Tall
- Plus Size
Shop by Category
- Baselayer
- Hoodies & Sweatshirts
- Jackets & Vests
  - Jackets
  - Vests
- Leggings
- Matching Sets
- Shirts & Tops
- Shoes
- Shorts
- Sports Bras
- Sweatpants & Joggers
- Underwear
Shop by Sport
- Basketball
- Flag Football
- Golf
- Hiking & Outdoor
- Pickleball & Tennis
- Running
- Softball
- Training
- Volleyball
- Yoga & Pilates
Shop by Collection
Accessories

Featured
Boys
Girls
- Accessories
  - Backpacks & Bags
  - Beanies & Cold Weather Gear
  - Equipment
  - Hats & Headbands
  - Lunch Boxes
  - Socks
  - Sport Gloves
  - Sunglasses
  - Water Bottles & Coolers
- Baselayer
- Hoodies & Sweatshirts
- Jackets
- Pants & Leggings
  - Athletic Pants, Sweatpants & Joggers
  - Leggings
- Shirts & Tops
  - Graphic T-shirts
  - Hoodies & Sweatshirts
  - Long Sleeves
  - Short Sleeves
  - Tank Tops & Sleeveless
- Shoes
  - Basketball
  - Running & Training
  - Sandals & Slides
  - Softball
  - Sportswear
- Shorts
- Sports Bras
Shop by Sport
- Hockey
- Baseball
- Basketball
- Flag Football
- Football
- Golf
- Softball
- Soccer
- Volleyball
Shop by Size
- Big Kids (8-20)
- Little Kids (4-7)
- Toddler (2T - 4T)
- Infant (12M - 24M)
- Newborn (0M - 9M)

Featured
- New Arrivals
- Release Calendar
- Velociti Running Shoes
- Shoes Under $100
Shop by Category
- Sandals & Slides
- Cleats
- Lifestyle Shoes
- Boots
- Wide Shoes
- Running & Training
Shop by Gender
Shop by Sport
- Baseball
- Basketball
- Fishing
- Football
- Golf
- Hiking & Hunting
- Lacrosse
- Running
- Soccer
- Military & Tactical
- Track & Field
- Training
- Volleyball
Shop by Collection