Hammer Head® Swim Cap w/Abbie Fish Logo


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Choose Your Color:Black
Choose Your Cap Size:Medium - 20.5″ to 21.5″ heads

Product Highlights

  • Innovative Cushioned Interior for Unparalleled Safety
  • Dome-Shaped Exterior for Minimal Drag
  • Durable Design - Won't Rip or Tear
  • Available in Three Comfortable Sizes

Why is Hammer Head so Unique?

Hammer Head Swim Caps are the only swim caps on the market offering an interior cushion for athlete protection, setting a new standard in swimwear safety.

Why Choose Hammer Head?

  • Unmatched Safety: Protect your swimmers like never before.
  • Durability: Say goodbye to ripped swim caps.
  • Speed & Comfort: No compromise - you can have it all.

*Available in black only. The Hammer Head® logo is on the front of each cap with the Abbie Fish shark fin logo on both sides of the cap. 


Ideal for racing, the Hammer Head® cap is safe, wrinkle-free, hydrodynamic, and reduces drag. Hammer Head® is the ONLY protective swim cap, and provides the best competitive advantage in the water.

  • TEKFIT® – new hydrodynamic wrinkle-free dome shaped design, achieving a reduction in frontal drag compared to a standard silicone cap
  • HIT Honeycomb Impact Technology® – patented technology designed to reduce the shock of repetitive and accidental head strikes in the pool
  • QUALITY – made with one solid piece of molded 100% premium silicone, tear resistant, and outlasts other caps 



Hammer Head® Swim Caps improve hydrodynamic performance in the water and reduce drag in competition.

  • Hammer Head's proprietary TEKFIT® cut is designed for the human head. Our caps are larger in the back than in front, and are available in three different sizes to ensure the perfect fit.
  • Perfect for competition, Hammer Head caps' dome silicone design in combination with honeycomb structure guarantees a smooth, wrinkle-free experience with unmatched hydrodynamic efficiency. 
  • With HIT® safety technology, swimmers can feel confident giving their full effort without worry of accidental collisions, allowing them to focus exclusively on speed.
“In addition to being safer, Hammer Head helps my client’s racing performance. Whether it’s actually putting numbers to the science, or the feel behind the cap — swimmers can tell when putting the Hammer Head cap on, they are faster.”
– Abbie Fish, Expert Technique Coach at USA Swimming High Performance Department


Hammer Head is the next generation of swim caps. All other sports require protective headgear, it's time swimming catches up.   

  • HIT Honeycomb Impact Technology® is a revolutionary addition to swim cap design, protecting against accidental and repetitive head strikes in the pool. 
  • Tiny honeycomb pillars provide an invisible protective layer, absorbing the shock from any impact with a pool wall or other swimmers. 
  • Enhancing performance and helping Hammer Head® caps stay wrinkle-free, HIT® introduces the only major safety innovation in swim cap design in over 100 years.   
"Hammer Head the safest, fastest, most comfortable and longest lasting swim cap in the world. My BREAKOUT clinics will have the best interest of the swimmers in mind being protected by Hammer Head Swim Caps."     
– Josh Davis, Olympic Gold Medalist and Founder of BREAKOUT! Swim Clinic
"It’s a simple but essential piece of safety equipment for every swimmer." 
– Rowdy Gaines, Three Time Olympic Champion 


Made from a seamless, flexible, premium silicone, Hammer Head® caps are designed to be the most comfortable and durable cap a swimmer will ever wear.

  • Hammer Head® Swim Caps are created with a single piece of 100% premium silicone compression mold, delivering a seamless and smooth finished product.
  • Unlike other swim caps, Hammer Head caps are built to last for years and will not rip or tear. 
  • Designed for comfort and flexibility, TEKFIT® and HIT® protection set a new standard for how a swim cap should feel. 
“I got the feeling that the honeycomb technology reduced heat loss without making my head feel sweaty or hot. Normally I can feel the motion of the water against my skull through my swim cap, but I think the hydrodynamic properties of your cap removed the feel, and it was actually quite pleasant.”   
– Melissa Wieser, Triathlete


Bulk Orders: For a custom quote with or without your team logo email info@hammerheadswimcaps.com or call 1-888-842-5151.

  • How to Wear – The Hammer Head® logo always goes in the front and the cap size is labeled on the inside back of the cap. If you have long hair, make a low ponytail and tuck it up in the back of the cap. 
  • Double Capping - Wear your cap in practice or under your team cap in competition for improved performance and safety. When you put your team cap over the Hammer Head Swim Cap, it will contour over the HIT Honeycomb Impact Technology feature and give you a completely smooth racing surface. 
  • Sizing – The silicone Hammer Head Swim Cap will fit ideally on many different size and shaped heads and various hair lengths. Aquatic sports athlete’s head circumference (measured above the ears) ranging from 19" to 22" will provide the best fit. You can also put your team cap over the Hammer Head for a more compressed fit.  The Hammer Head logo is always located on the front center of the cap. The size is marked with "S", "M" or "L" on the back inside of your cap.
  • How to Care - Rinse your Hammer Head Swim Cap after use. Turn it inside after use to dry completely. Avoid sharp objects that may puncture your Hammer Head.

Your Head Matters!

Introducing the world's first protective swim cap!

Say goodbye to head injuries in the water with our innovative design. The tiny honeycomb pillars inside the cap create an invisible shield, absorbing shock from accidental and repetitive impacts.

It's time to prioritize head safety in aquatic sports

Ready to RACE?

Our latest innovation is ideal for all racing enthusiasts! With its wrinkle-free, hydrodynamic dome exterior surface, it's up to 10.5% faster! Testing at top speeds proved it can shave off a whopping 0.6 seconds in a 50 Free!

That's the game-changer you need to secure victory! Don't miss out on this competitive advantage!

TEKFIT® Comfort Rules!

Dive into ultimate comfort with Hammer Head® TEKFIT®!

Designed with a proprietary cut that perfectly conforms to your head shape, it's larger in the back and smaller in the front for an unbeatable fit. No more hair-pulling struggles when putting on or taking off!

Choose from three sizes to find your perfect fit.

365 Day Guarantee

Dive into durability with Hammer Head® Swim Caps!

Our seam-free, premium silicone caps are built to withstand the test of time, making them the top choice for all swimmers. No more worrying about wear and tear!

100% Risk Free! Take advantage of our 365-day no-tear guarantee

Biggest BANG For Your BUCK!

Choose Hammer Head® caps for a smart swim gear investment.

While standard silicone caps add up to $60-$75 annually (4-5 caps at $15 each), our single $34.95 cap outlasts all others, ensuring unmatched quality and unbeatable value. Notably, no Hammer Head cap has ever torn!

With Hammer Head, you're making a wise choice for long-term savings, top-notch quality, and poolside peace of mind.

Star-Power, Right Here!

Olympian Endorsement: Olympic champions, such as Rowdy Gaines, Josh Davis, Dr. Gary Hall, Sr., Greg Dummer, and Tom Malchow, wholeheartedly support the groundbreaking advantages that Hammer Head offers to aquatic sports.

Sensory Friendly Excellence!

Hammer Head® is honored to earn a coveted place on Sensory Friendly Solutions' esteemed 'Favorite Things' list.

Our caps play a crucial role in enhancing the sensory-motor experience for individuals coping with sensory disorders, vision impairment, spatial perception challenges, noise sensitivity, and anxiety.

By minimizing distractions, we contribute to a more enriching aquatic experience for every swimmer."


For a custom quote with or without your team logo

bulk order

Email us at: info@hammerheadswimcaps.com
Call us at: 1-888-842-5151.



The Hammer Head® logo always goes in the front and the cap size is labeled on the inside back of the cap.
For aquatic athletes with long hair, be sure to make a low ponytail in the back and tuck your hair up inside the back of your Hammer Head swim cap.


Hammer Head is just fine working behind the scenes to give you the best experience possible. Give the prime logo real estate to your team and sponsor! Simply wear your Hammer Head under your team cap in practice or competition for improved performance and confidence to train aggressively. When you put your team cap over your Hammer Head cap, it will conform for a completely smooth and wrinkle-free racing surface.


The Hammer Head will fit ideally on many different size and shaped heads and various hair lengths. Please refer to the chart to estimate the best size for you. Simply measure the circumference of the head approximately 1" above the ears. You can wear your team cap over the Hammer Head for a more compressed fit. There is a front and a back to the your Hammer Head, so make sure our logo is always in front for the most comfortable fit. Sizes are marked on the inside back rim of the cap; small = S, medium = M and large = B (long story).


Rinse your Hammer Head after use and turn it inside out to dry completely. Avoid sharp objects that may puncture your Hammer Head.

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