Thanks to the innovative vacuum insulation technology used in the production of the thermos bottle, carbonated drinks will stay cold in it for up to 24 hours. Due to the deep vacuum in the space between the walls, the drink does not heat up in the heat, thereby minimizing the pressure change process inside the bottle. Condensation does not form on the body of the thermos with a cold drink, so the thermos bottle does not slip in the hand. Safe opening of the thermos with a carbonated drink is ensured by a special design cap-cork. It consists of two parts with a pressure release system, which prevents the cork from being pushed out and the drink from spilling even if the thermos is accidentally shaken. The thermos bottle is easy to open in two steps - first, you need to slightly turn the cork counterclockwise to equalize the pressure, and then completely unscrew the cork. For maximum drinking comfort, the rim of the neck is made wide in thickness and rounded. With a large useful volume (1 liter), the thermos is compact and lightweight enough. It weighs only 400 grams, easily fits in a bag or side pocket of a backpack, and is also suitable for placement in most car cup holders and bicycle holders. All materials from which the thermos is made are absolutely safe, environmentally friendly, and suitable for recycling. Food-grade corrosion-resistant 18/8 AISI 304 Stainless Steel used in the production of the thermos is inert to the contents and does not affect the taste of the drinks, resistant to temperature changes, and provides the strength of the thermos. The screw cap-cork is made of modern copolymers that do not contain bisphenol A (BPA free), are thermally resistant, mechanically strong, and durable, they do not release or absorb foreign odors. The seal responsible for the thermos bottle's tightness is made of heat-resistant food-grade silicone. The seamless welding technology makes the walls of the thermos completely smooth, so residues of drinks do not linger on them and their aromas are not absorbed. The thermos is easy to clean. The vacuum insulated thermos can also be used to store cold sports drinks, smoothies with ice, warm drinks, however, it is recommended to drink hot drinks not from the neck, but using a cup or glass to avoid burns. The THERMOS® FJK-1000 NVY model fully complies with the International Quality Standard EN-12546-1:2000.