Insulated Stainless Steel Flask (700ml-1500ml) - 316L Medical Grade - 24H Thermal Performance

Medical-Grade 316L Interior: Expertly crafted with a premium 316L stainless steel liner, providing superior acid and alkali resistance compared to standard 304. It ensures your tea or coffee remains pure and untainted by metallic aftertastes.

24-Hour Thermal Endurance: Engineered with advanced vacuum insulation to maintain temperatures above 50°C for a full 24 hours. Whether you're on a long shift or a day-long hike, your beverage stays exactly how you like it.

Dual-Purpose Intelligent Lid: Featuring a high-sealing design where the outer cap doubles as a convenient drinking cup. The integrated 316L tea infuser allows for a professional tea-leaf separation experience on the go.

Rugged, Leak-Proof Construction: Built for reliability with a 360° reinforced silicone seal and BPA-free food-grade materials. Rest assured of a mess-free experience, whether it's stored in a gym bag or an outdoor rucksack.

Versatile Sizing for Every Need: Available in four high-capacity sizes (700ml, 900ml, 1200ml, and 1500ml) and a variety of premium finishes. From a student's desk to a professional's survival kit, there is a size tailored for your lifestyle.