Sigma Fit USA is a Chicago-based activewear and athleisure company founded in 2017 by three former petroleum engineers who wanted to create affordable, high-quality sportswear that can solve the everyday problems that athletes face.

All of Sigma Fit’s technical athletic gear combines natural materials with nanotechnology that keeps athletes comfortable and dry during the most taxing of workouts. Every product has distinctive properties that wick away moisture and either repel stains and odors, lock in body heat, cool the body, or kill harmful viruses and bacteria on contact. Learn more about our product offerings below:

Hydrophobic Cotton T-Shirts: Made of premium Egyptian Cotton, our hydrophobic t-shirts are blended with nanotechnology to continuously protect against stains and odor-causing bacteria.
Shop Men
Shop Women

Heat-Lock Hoodies: A mixture of pure cotton and spandex, both woven together through an innovative technique that locks heat between the body and the garment for a longer period of time.

Silver-Infused Compression Shirts, Sports Bras & Leggings: By adding a perfect blend of silver fiber into our fabrics, we have developed an effective, safe and natural way to neutralize odors, fight off bacteria, and help you stay fresher longer throughout the day.
Shop Men
Shop Women

KJ20 Training Mask: A cutting edge respiratory conditioning device that will take your workouts and fitness to a whole new level. The KJ20 Training Mask is powered by a revolutionary four-mode air flow platform that is  precision crafted to apply variable levels of load to the respiratory muscles via its dialable air flow adjustment system.

Cooling TowelsStay cool and dry with Sigma Fit’s one and only cooling towel. Our chemical-free cooling towel helps you to maintain an optimal core body temperature so you can focus all your energy on maximizing performance. Just wet, wring and snap the towel to activate the cooling technology for up to 2 hours. When the cooling effect wears off, re-wet and re-snap as needed to stay cool as long as you need.

The Ultimate No Tie Shoelaces: Our stylish silicone gel shoelaces let you turn any old shoe into a comfortable, convenient, and time-saving slip on. These laces are stain resistant and can withstand highly vigorous physical activity.

Transforma X Gym & Travel Bag: Transforma X is a multi-functional duffel bag & backpack that removes viruses and odor-causing bacteria from your clothes and shoes. Simply turn on the removable UV-C/Ozone Air Purifier and in less than 20 minutes, you’ll be ready to wear your clothes again without wasting a single drop of water.

Contact Us

We use cookies to improve your experience on our website. By browsing this website, you agree to our use of cookies.