Jumpbox is rising to challenges, committing to goals and pushing hard every day to reach new PRs. We make quality athletic apparel for athletes committed to cross fitness, weightlifting and other forms of performance training.

Our t-shirts, tanks and hoodies for men and women perform in the toughest workout conditions. You bring the intensity and sweat and our garments will move with you through the WOD. We’re as focused as you are about putting an Rx next to your name on the board, pushing through the burpees, box jumps, doubleunders and kettlebells AFAP, and moving big weight on the cleans, snatches and jerks. It's the combination of community and competition that draws us to the Box each day, thirsty for more.  And it’s a drive to reach optimal fitness and to perform to the best of our ability that keeps us coming back year after year. We're all on our own individual lifelong fitness journeys. We're all athletes in pursuit of our stronger, faster, better selves. And we're just getting started. Many of our greatest athletic achievements lie ahead of us.

Welcome to Jumpbox Fitness. Be powerful. Raise the bar. 

Jumpbox Fitness
Seattle, Washington, USA 

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About our Founders

Jumpbox Fitness was founded by Dana and Snowden Armstrong, athletes at The LAB Strength and Conditioning, a CrossFit gym in the Wallingford neighborhood of Seattle, Washington, USA. The LAB is the home gym to many dedicated competitive athletes in the Seattle area as well as a training ground for many new athletes discovering CrossFit for the first time. Husband/wife team Snowden and Dana find the CrossFit training and community the LAB provides to be the perfect complement to their busy daily lives as serial entrepreneurs and parents. Email our or

Jumpbox Fitness is a Kaidel Sportswear brand.



Jumpbox Fitness is not affiliated with CrossFit, Inc. nor is it endorsed by CrossFit, Inc. or any of its subsidiaries. CrossFit is a registered trademark of CrossFit, Inc.