CUP FIT GUIDE

FIND THE RIGHT FIT. CHOOSE THE RIGHT PROTECTION.


Answer three simple questions to find your athletic cup size, protection level, and best setup for your sport.

Start Here

What Kind of Protection Do You Need?

Young Athletes

Start with size first, then choose a setup that stays secure.

Everyday Play

Bio-Flex 2.0 gives flexible protection for practice and regular play.

High-Impact Sports

Ultra 2.0 is built for maximum protection in faster, harder-contact situations.

Want the Easiest Setup?

Choose compression shorts with an integrated 2.0 cup.

Find Your Setup

Step 1

Find Your Size

A protective cup should fit securely against the body without pinching, shifting, or leaving extra space.

TIP:

  • Snug enough to stay in place
  • Comfortable enough to move freely
  • No shifting during running, cutting, or contact

Cup Size Charts

SizeWaistCup SizeAge
XX Small 18"–20" X-Small Under 7
X Small 20"–22" X-Small Under 7
Small 22"–24" Small Under 9
Medium 24"–26" Small Under 9
Large 26"–28" Small Under 9
X Large 28"–30" Medium 10-14
SizeWaistCup SizeAge
X Small 28"–30" Medium 10 - 14
Small 30"–32" Large 7+
Medium 32"–34" Large 15+
Large 34"–36" Large 15+
X Large 36"–39" Large 15+
XX Large 39"–43" Large 15+
XXX Large 43"-46" Large 15+

Step 2

Choose Your Cup

Ultra 2.0 Cup

Maximum-impact protection built for higher contact sports and game-day intensity.

Shop Ultra 2.0

Bio-Flex 2.0 Cup

Flexible everyday play protection designed to move with the athlete.

Shop Bio-Flex 2.0

AirCore Cup

Lightweight protection from patented 3-layer fusion technology.

Shop Aircore

STEP 3

CHOOSE YOUR SETUP

Frequently Asked Questions



  • Measure your waist circumference with a soft tape measure about 1 inch above your hips. Use Shock Doctor's sizing chart to match your measurement to Youth, Small, Medium, Large, or XL. When between sizes, size up for comfort and protection.

  • AirCore uses a patented 3-layer fusion design with compressed foam and fabric shells for the most advanced protection and comfort. Ultra Pro offers a 3-piece impact shield system that disperses shock across multiple layers — ideal for high-contact sports. Core (BioFlex) is the entry-level option with a vented bio-shaped design, suited for all ages and recreational athletes.

  • Hockey typically requires a hard protective cup. Football, baseball, and lacrosse players can choose between hard cups (AirCore, Ultra Pro) and softer compression options. Martial arts and MMA athletes generally prefer a hard cup with a snug compression short or supporter.

  • No — Shock Doctor offers youth-specific sizing for boys ages 4–12. Youth cups are smaller and shaped differently than adult cups. Always use the boys' sizing chart when selecting for younger athletes.

  • Most hockey leagues require a hard cup with full protection. The AirCore and Ultra Pro lines meet those requirements. Pair with compression shorts designed for hockey to ensure the cup stays in place during skating movement.

  • Yes. All Shock Doctor cups can be purchased individually or as a bundle with matching compression shorts or a supporter.