• Portable and universal thermal lid for stainless steel cups and thermoses with an internal diameter of 5.2 cm • Ideal accessory for travel mugs, with an innovative press-fit system and ergonomic design • Compatible with 95% of standard bottles, thanks to its double stabilizing thread and anti-crack technology • Optimized for containers of 600-1200 ml, made of food-grade polypropylene (PP), lightweight and resistant up to 120°C • 360° rotating mechanism with adjustable opening and ergonomic central button that reduces effort • Spill-proof safety for liquids above 80°C • Odorless material due to hot molding • Specifications: diameter of 5.2 cm, thickness of 2.8 mm, operating temperature from -20°C to +120°C • Thermal resistance: maximum wash at 100°C to avoid deformation • Requires quarterly inspection of the ring for maintenance • Quality control through pressure tests and opening cycles • Do not boil or wash in water above 100°C • Use detergent at room temperature and rinse • Made of safe, non-toxic, colorless, and odorless plastic and silicone