An athlete will never get the benefit of a hydration pack that is too uncomfortable or performance-diminishing to wear. To ensure Nathan paks do not fall into this category, we start by creating a bounce-free ride. First, we employ 70/30 BOTTLE POSITIONING – 70% of the bottle falls below the belt – so that gravity will help minimize flopping.
the patent-pending Propulsion Harness system articulates as your torso rotates during activity, preventing the pak from riding up or swaying back and forth. And, thanks to two inches of frictionless travel, from both the 2-way and 3-way configurations, each shoulder strap moves independently, putting every ounce of energy to work propelling you toward the finish line.
Just as the Propulsion Harness reinvented the way bladder packs achieve stability, Nathan’s VEST TECHNOLOGY reinvents the bladder pack itself. Instead of compression, Nathan Race Vests and Bike Vests utilize a system of balanced weight distribution which eliminates pressure points at shoulders. Meant to be worn a little loose, it feels more like a hug than a weight on your back, resulting in the most comfortable way to carry fluids for extended exertion.
Only the Nathan Speed Series utilizes MOLDED HOLSTERS, allowing quick ONE-HANDED removal and replacement of Nutrition Flasks. Silicone Grips keep Flasks securely in place and eliminate the need for retainer bands.Our POWER STRETCH MESH pockets were inspired by bike jerseys, and will hold variably sized objects securely. Paks like the Speed 4R incorporate “closure-free” access, for the quickest way of getting to your small essentials.
We also incorporate SHOCK CORDS as often as possible. They securely hold gels, jackets, gloves, and sunglasses, but have almost zero weight when empty.

Our new RACE CAP™ was designed specifically for gel consumption and features a high-flow, one-way valve that opens and closes automatically and offers a quick shot of gel–no need for intense squeezing or sucking. Nathan Steel and Tritan™ Bottles feature a unique FLIP STRAW that allows you to access fluids without unscrewing the cap or tilting the bottle. All Nathan stainless steel bottles are made with 18/8 food grade stainless steel.