I’ve recently done a few challenges like a 3 mountains peak challenge in a day and a 50km walk and these kept me going most of the way. You get a bit sick of them after a few camelbacks later when I switched to plain water. I had to have a snickers bar near the end though which did better than these did.
Scientifically engineered for every sport men. Therefore, gives excellent hydration to the body. Without SIS would be difficult to replace the amounts of electrolytes.