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

Personal Use Item Return Policy

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Official Reviews


Edward N.

Concord, CA

April 1, 2023
This combo performed like a champ in my game today! I took two direct hits and one ricochet into it with minimal discomfort. No post-game no soreness. So glad I got it.

Naoyuki A.

Izumo, Shimane

March 16, 2022
This is also a replacement by purchase. This is a highly reliable product that will absolutely protect it. We have prepared two sets in case of emergency.

Joseph P.

Lynnfield, MA

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

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Questions About This Product

Q: I have a 50" waist. Do you have a jock/cup for my size?
– Steve Wolf

While this Shock Doctor Core Jock reaches 2X (39-43), please find your best fitting jock with Smitty Tights or Shorts with a Cup Pocket, size 4X (50-52). Our offered protectives cup will fit into the Smitty cup pockets.

– Ty Unthank
Marketing Specialist, HS & College Umpire

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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.