Boy at practice wearing EYRX CoreFlex athletic shorts

Boys’ Athletic Shorts

Every brand has a story. Ours started with the player.

  • Let them play. Made for whatever the day holds.
  • Let them feel good. All-day comfort.
  • Let them choose. The pair they’ll reach for.
EYRX athletic shorts

The story behind EYRX

A coach noticed.
A family made it personal.

Fifteen years ago, our founder coached a team sponsored by a major athletic brand. The “youth” gear arrived looking like smaller versions of adult clothing, cut for someone else. The kids wearing it felt like an afterthought.

Years later, seeing the same gap with his own kids became the reason to start EYRX.

We spent more than a year working with talented designers to refine youth athletic shorts with the athlete at the center of every decision.

Youth Baseball and Softball Shorts for Practice, Camps and Everyday Wear

From the batter's box to the base path, CoreFlex youth shorts are built for the stance, the swing and everything that happens around the diamond. Cut for how kids actually move, in baseball and softball fits.

Squats. Full swings. A sprint to first on every ground ball.

Built For The Diamond

  • 4-Way Stretch. Moves through a deep stance and a full swing without binding up.
  • Deep Pockets + Zipper Pocket. Holds a batting glove or house key through a full sprint.
  • Breathable + Odor Resistant. Comfortable through a doubleheader or a long tournament day.
  • UPF 50+. Sun protection built into the outer shell for long innings in the sun.
  • Reflective Details. Visible walking to early practice or leaving a night game.
  • Built-In Compression Liner (girls' styles). Extra coverage and confidence, with nothing extra to wear underneath.

Specs at a Glance

  • Fits: boys' and girls' cuts for baseball and softball
  • Sizes: XS to XL. See the size chart on each product page.
  • Fabric: 90% polyester, 10% spandex shell with four-way stretch
  • Sun protection: UPF 50+ outer shell, lab tested
  • Bundle and save: 2 for $89 or 4 for $159, mix styles and sizes. Single pairs $58.
  • Shipping and returns: free standard shipping, 30-day returns and a free first size exchange
  • Size-Up Reward: get $20 off your next bundle when you buy a qualifying one

Youth Baseball and Softball Shorts FAQ

Are these sliding shorts?

No. CoreFlex are practice and training shorts for batting practice, camps, conditioning and everyday wear. For games, most players wear uniform pants.

What size should I order?

Go by height, not age. Boys' and girls' styles both run XS to XL, with a size chart on each product page, and you can mix sizes inside a bundle. If the fit is off, returns are easy within 30 days.

Which style should a softball player wear?

Girls' styles have a built-in compression liner and the same stretch, pockets and UPF 50+ shell, which suits softball practice and camps. Boys' styles are built for baseball.

How do the bundles work?

Pick any two pairs for $89 or any four for $159. Styles, colors and sizes can all be mixed, which makes it easy to cover a full week of practices.