Safe & Fast Swim Caps for Adults & Youth - Hammer Head Swim Cap


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Choose Your Color:Black
Choose Your Cap Size:Small - 19″ to 20.5″ heads

We invented Hammer Head to make every aquatic athlete safer, faster and more confident in the water with the best swim cap technology in the industry.   

Our cap is designed with HIT technology, a patented cushion inside to minimize accidental and repetitive head hits in the pool or open water alike making it 50% safer than other swim caps. It is designed for racing with a wrinkle-free dome surface that reduces frontal drag by up to 10.5%. It is also comes in three sizes, giving you the most comfortable fit and not one Hammer Head has ever torn, making it the most durable swim cap on the market.


Head Safety

Hammer Head®'s patented HIT Honeycomb Impact Technology separates it from any other swim cap in the world. The tiny honeycomb pillars inside the cap provide an invisible protective layer, absorbing the shock from accidental and repetitive impact with a pool wall or other aquatic athletes. All other sports require protective headgear. Head hits occur above and below the surface and it's time aquatic sports catch up.


Ideal for racing, the Hammer Head® cap is wrinkle-free, hydrodynamic, and after thorough testing, it reduces drag by up to 10.5%. Hammer Head's smooth dome surface provides the best competitive advantage and can reduce 0.6 seconds in a 50 Free, which can easily be the difference between winning and losing a race.

TEKFIT® Comfort

Hammer Head® is the only swimming cap in the world with proprietary TEKFIT cut designed to conform to the human head, larger in back and smaller in front. Hammer Head is also the only swim cap with a smooth dome surface that comes in three sizes, small-medium-large, to ensure the most comfortable fit and won't pull hair when putting on and taking off.


Hammer Head® Swim Caps are made from premium silicone delivering the highest quality swim cap on the market. Unlike other swim caps, Hammer Head is seam-free and built to last for years, not months. In fact, not one Hammer Head swim cap has ever ripped or torn, which is why we offer a 365 day no-tear guarantee.


Hammer Head® swimming caps are $34.95 each. Regular silicone caps will run you $10-$15 each. You know that you will go through roughly 4-5 standard silicone caps in a year, which adds up to between $40-$75. The numbers don't lie and Hammer Head is the best value and the quality is second-to-none. You won't replace it unless your head grows and you will love our 365 day no-tear guarantee!

Olympian Approved

Olympians, including Rowdy Gaines, Josh Davis, Dr. Gary Hall, Sr, Greg Dummer and Tom Malchow stand behind the revolutionary combination of benefits Hammer Head brings to all aquatic sports.

Sensory Friendly

Hammer Head® is proud to be on Sensory Friendly Solutions' "Favourite Things" list as the world’s only in its category. Hammer Head swim caps are especially helpful to prevent injury and manage the sensory-motor experience for people with sensory disorders, vision loss, poor visual perception, difficulty with spatial distancing, noise sensitivity and anxiety.

The fewer distractions a swimmer has, the better aquatic experience they will have, whether it be adaptive swim lessons, water therapy, occupational therapy or just having fun splashing around in the water.


For a custom quote with or without your team logo

bulk order

Email us at:
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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