Boys Kids' Shop by Size - Loose Fit for Training | Under Armour

Featured
- New Arrivals
- Fall Savings Event
- Hoodie SZN
- Compression Shop
- We Are Football
- Plus Size
- Short & Tall
Shop by Category
- Baselayer
- Hoodies & Sweatshirts
- Jackets & Vests
  - Jackets
  - Vests
- Leggings
- Matching Sets
- Shirts & Tops
- Shoes
- Shorts
- Sports Bras
- Sweatpants & Joggers
- Underwear
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- UA Halo
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- HeatGear®: Keeps You Cool
- ColdGear®: Keeps You Warm
- UA Icon
- Project Rock
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- College Fan Gear
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
- One Piece & Sets
- Pants & Leggings
  - Athletic Pants, Sweatpants & Joggers
  - Leggings
- Shirts & Tops
- 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
- New Arrivals
- Release Calendar
- Velociti
- UNLESS
- Curry Series 7
- D. Fox 2
- Shoes Under $100
Shop by Category
Shop by Gender
Shop by Sport
- Baseball
- Basketball
- Fishing
- Football
- Golf
- Hiking & Hunting
- Lacrosse
- Running
- Soccer
- Military & Tactical
- Track & Field
- Training
Shop by Collection