The human body contains from 55% to 78% water, depending on body size. To function properly, the body requires between one and seven litres of water per day to avoid dehydration; the precise amount depends on the level of activity, temperature, humidity, and other factors
So, Whether you’re on a trekking journey or extream cyclist having and water reservoir seems to be undeniably crucial. That is why Hauser hydration pack is perfect rendition of what a rugged waterproof backpack should be like Compatible with most hydration reservoirs up to 3 litres including Camelbak, Hydrapak, Platypus, and Osprey/Nalgene.
Image sources – https://missionworkshop.com/products/the-hauser-hydration-backpack