Shock Doctor Core Jock with Bio-Flex Cup

Shock Doctor Core Supporter with Bio-Flex Cup

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Created with breathable, four-way stretch mesh, the Core Jock achieves the perfect fit. The jockstrap's comfort waistband allows you to play without irritation. The Shock Doctor Bio-Flex Cup, a vented bio-shape cup designed to shield areas where protection is most crucial. The body of this core protective cup forms flawlessly to your athletic frame to provide unrestricted movement, airflow and comfort.

CUP Features

  • Provides multi-stage protection and mobility whether you are calling from stationary position or running to get into position
  • Conforming gel perimeter pad eliminates any residual impact transmissions.
  • Anatomical design conforms to the body to provide maximum comfort.
  • Cup size: adult one-size-fits-all


  • Multiple vents for air flow and moisture transport
  • Dual density flex notch allows unrestricted movement.
  • Extra-wide comfort waistband

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Official Reviews


Joseph P.

Lynnfield, MA

August 6, 2021
Very lightweight, keeps you cool. Took a shot there, no problems. Stays in place and comfortable.

Robert K.

Mathias, WV

August 3, 2021
Nice solid protector. Longevity is untested.

Gabe S.

New Hampshire

June 21, 2021
Does an A1 + great job of holding cup in place and wears nicely, no binding, pinching issues. I use the Shock Doctor Ultra Carbon Flex with this and the 2 of them pair together very nicely!

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Questions About This Product

Q: I bought a XL and the cup is too small, does the cup size come in different sizes?
– Stephanie Reynolds
A: I am sorry to hear the cup is too small. While Shock Doctor does manufacture a cup that is one size larger (considered XL), they only offer a cup and jock package with a Large cup. We do not offer it at, but an XL cup can be purchased separately through Shock Doctor's website.
– Josh Mann
Pro School Umpire Graduate

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WARNING: Participants in any sports activity assume risk of injury. This equipment may be used to help aid in preventing or reducing the extent of injury. No equipment can guarantee umpire or player safety from injury during participation, and use of this equipment carries no such guarantee. Do not use any umpire equipment that is damaged in any way.