We believe there is no such thing as “One Size Fits All.”

It is more appropriate to say that One Size Fits Most. Our products are adjustable for a wide range of differently sized people. Ultimately, adjusting the vest in a manner that results in the RPCM CoolPacks being centered over the cardio vascular system of the wearer will result in maximum performance from the product on a person of almost any size. If necessary, we offer optional elastic strap extenders that can be used with any of our products to help fit even the largest person. See our WebStore for ordering info.