Boys Kids' Shop by Size - Loose Fit Short Sleeves | Under Armour

New Arrivals
- Men
- Women
- Kids
- Shoes
Featured
Gift Guide
Winter Sports

Featured
Boys
- Accessories
  - Backpacks & Bags
  - Beanies & Cold Weather Gear
  - Equipment
  - Lunch Boxes & Mini Coolers
  - Socks
  - Sport Gloves
  - Sunglasses
  - Water Bottles & Coolers
- Baselayer
- Hoodies & Sweatshirts
- Jackets & Vests
- One Piece & Sets
- Pants & Leggings
  - Athletic Pants, Sweatpants & Joggers
  - Leggings
- Shirts & Tops
- Shoes
- Shorts
- Underwear
Girls
- Accessories
  - Backpacks & Bags
  - Beanies & Cold Weather Gear
  - Equipment
  - Hats & Headbands
  - Lunch Boxes
  - Socks
  - Sport Gloves
  - Sunglasses
  - Water Bottles & Coolers
- Baselayer
- Hoodies & Sweatshirts
- Jackets
- One Piece & Sets
- 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
- Hiking & Outdoor
- Softball
- Soccer
- Volleyball
Shop by Size
- Big Kids (8-20)
- Little Kids (4-7)
- Toddler (2T - 4T)
- Infant (12M - 24M)
- Newborn (0M - 9M)

Featured
Shop by Category
- Sandals & Slides
- Cleats
- Lifestyle Shoes
- Boots
- Wide Shoes
Shop by Gender
Shop by Sport
Shop by Collection
- UA Charged+
- UA Halo
- UA SlipSpeed™
- Curry Brand
- D. Fox 2
- UA Phantom
- Project Rock
- Bryce Harper

Men
Women
Kids
Shoes

Featured
- Extra 50% Off Outlet
- Apparel Under $25
- Shoes Under $75
Men
- Accessories
- Jackets & Vests
- Pants & Leggings
- Shirts & Tops
- Shoes
- Shorts
- Underwear
Women
- Accessories
- Jackets & Vests
- Pants & Leggings
- Shirts & Tops
- Shoes
- Shorts
- Sports Bras
Boys
Girls
- Accessories
- Pants & Leggings
- Shirts & Tops
- Shoes
- Shorts
- Sports Bras