Stay hydrated during activity to maximize performance and support muscle recovery with the 0.5-liter MILLET FLASK 500 bottle. Featuring a wide opening, it allows for quick and convenient fluid replenishment, while the leak-proof valve ensures hassle-free use without the risk of leaks. Its flexible design easily fits into the pockets or shoulder straps of MILLET trail packs, allowing for quick access to a drink at any time during your hike.