Hammer Head Fit Guide

How to Wear Your Hammer Head Swim Cap

Wear the logo in the front

Yes — there’s a front and a back

For best performance and comfort, wear your Hammer Head Swim Cap with the logo centered in front. That’s exactly how the cap is engineered to fit, protect, and perform.

Long Hair Demo

Long Hair. Don't Care.

For swimmers with long hair, pull it into a low ponytail at the back of your head and gently tuck your hair up inside the back of your cap. This helps create our signature smooth dome and ensures a comfortable, secure fit.

Your hair tucked in the back of your Hammer Head cap keeps bulk out of the crown of the head, allowing the cap to sit smoothly and evenly where protection is engineered and needed most.

Your Hammer Head should feel secure, smooth, and surprisingly comfortable — not tight, not loose. When it fits right, you’ll forget you’re wearing it… until you feel the confidence it gives you.

Double Capping? We've Got You Covered

Three easy steps:

1) Put your Hammer Head on first

2) Slip your goggles on over Hammer Head

3)Layer your team or event cap over the top

This setup delivers:

  • A smooth, wrinkle-free dome for improved hydrodynamics
  • All-day comfort
  • Added head-impact protection without bulk

Everything a swim cap should be — and more.

Hammer Head Size Chart

Getting the right fit matters — for comfort, protection and performance. The good news? Finding your size is quick and easy.

Hammer Head comes in three sizes designed to fit all ages and head shapes:

Small – Youth (typically 8 & under)
Medium – Most teens and adults
Large – Larger heads or swimmers with long/thick hair

You’ve found the right size when it feels secure, comfortable, and smooth — not tight or restrictive.

This is the Hammer Head swim cap size chart to help you select the best size for you. It shows small swimming cap size, medium swim cap size and large swimming cap size.