1-2 servings in 500-700 ml of water per hour is sufficient

the PETZL SWIFT LT is perfect in our opinion

Light and pleasant flavor

Netherlands

5% spandex

PETZL e+LITE® Stirnlampe BIX HYDRATION 1-2 servings in 500-700 mlThe ultralight and compact e+LITE headlamp is designed for emergency situations and fits easily into any pocket. Lumens: 30 Lumens (ANSI PLATO FL 1) for good visibility Weight: 26 g lightweight and handy Beam: wide for optimal illumination Power source: 2 lithium batteries CR2032 (included) Waterproof: IPX7 (waterproof up to 1 meter for 30 minutes) Warranty: 10 years for long term reliability According to the manufacturer, the always ready lamp can be