The responsible water keeper - this is how you can call the GUARDIAN series thermos bottle from the legendary THERMOS brand. In a bottle with vacuum insulation, water will maintain exactly the temperature that is important for sports activities and workouts, regardless of whether it's summer or winter. To make it convenient to drink while on the move, the manufacturer has developed a special lid design. It instantly opens with a simple press of a button, the lid flips back, locks in the open position, and does not tip over while drinking. To prevent accidental opening, there is a lid locking mechanism - simply slide the lever on its body to the "lock" position. Therefore, the leak-proof thermos bottle can be safely carried in a bag or backpack, or outside - attach it with a loop securely attached to the lid. The lid of the bottle has a built-in water consumption counter - on the side of the lid there is a digital scale from 1 to 6, and on the rotating bottom part there is a special mark. Now you don't have to remember how many portions of water you have drunk - after each portion consumed during the day, move the mark to the corresponding number. Comfort while drinking is provided by a spout in the form of a wide straw with rounded edges. The diameter of the drinking hole allows the thermos bottle to be used not only for storing water, but also for thick drinks and sports nutrition. The thermos bottle has an ergonomic shape, slightly widening towards the bottom, and the tactile polymer powder coating has an anti-slip effect, making it not only convenient but also pleasant to hold in your hand. The relief logo, made by the embossing method, adds a touch to the external appearance. The dimensions of the thermos bottle are suitable for most car cup holders, as well as for bicycle holders. Compliance with the International Quality Standard EN12546-1:2000 confirms the reliability and safety of the thermos bottle. It is made using innovative technologies - vacuum insulation and seamless welding. The first ensures long-term temperature retention of stored liquids, eliminating heating or cooling of the body, while the second ensures the strength of the structure and the preservation of the vacuum in the interstitial space for many years. The materials from which the thermos bottle is made also contribute to its long service life. The body and flask are made of food-grade stainless steel, which is resistant to mechanical impacts, neutral to the contents, and therefore does not affect the taste of the drinks. The lid is made of next-generation copolymers without the use of bisphenol A (BPA free), which are heat-resistant and impact-resistant, do not release or absorb foreign odors. The sealing gasket and seal ensuring leak-proofing are made of durable food-grade silicone, resistant to high temperatures. The volume of the TS-4319 BK model is designed for three full portions of drink or water, so you can take it with you on a long run, bike ride, or ski race.