{"product_id":"the-vanguard-flask-vacuum-thermos-tea-strainer","title":"The Vanguard Flask | 800ml Stainless Vacuum Thermos with Tea Strainer","description":"\u003cdiv class=\"product-narrative\"\u003e\n\u003cp\u003e\u003cstrong\u003eSome objects hold heat. This one holds ritual.\u003c\/strong\u003e The Vanguard Flask was designed for the small ceremonies that structure a demanding day: the 6 a.m. tea that steadies your hands before the first meeting, the ice-cold water waiting after a two-hour workout, the herbal infusion that closes the evening. Inside its double-wall vacuum body, a food-grade SUS316 stainless steel chamber holds temperature for 6 to 12 hours, so the tea you pour at dawn is still honest at noon and the water you chill at lunch is still cold at the final bell.\u003c\/p\u003e\n\u003cp\u003eMost thermoses hide their engineering. The Vanguard wears it with intent: an inner wall of 316 stainless steel, the same alloy trusted in surgical instruments, wrapped in a 201 stainless shell that shrugs off drops, scuffs, and the chaos of a commuter bag. The wide mouth accepts ice cubes, tea leaves, and a cleaning brush with equal ease, while the integrated stainless steel tea strainer lets you steep loose-leaf tea properly instead of fishing leaves out of your drink with your teeth.\u003c\/p\u003e\n\u003cp\u003eDetails are where a daily object earns its place. The 304 stainless and food-grade PP lid seals without a fight and opens one-handed. The anti-slip base uses a concave-convex structure that refuses to slide across a desk or car console. Choose the 600ml size for a commute or the 800ml for a full workday, in white, black, pink, green, or purple, and let the flask match the identity of its owner rather than the other way around.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eThis is not a cup. It is a small promise of temperature kept.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003chr style=\"margin: 20px 0; border: 0; border-top: 1px solid #eee;\"\u003e\u003cdiv class=\"product-features\"\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul style=\"list-style: none; padding: 0;\"\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e✦ SUS316 surgical-grade stainless steel inner wall with a durable 201 stainless outer shell\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e✦ 6-12 hours of heat retention and cold locking through double-wall vacuum insulation\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e✦ Integrated stainless steel tea strainer for genuine loose-leaf steeping\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e✦ Wide-mouth opening sized for ice cubes, tea leaves, and effortless cleaning\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e✦ 304 stainless steel and food-grade PP lid with a secure, one-handed seal\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e✦ Anti-slip concave-convex base that stays planted on desks and car consoles\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e✦ 600ml and 800ml capacities in white, black, pink, green, and purple\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-specs\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul style=\"list-style: none; padding: 0;\"\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 600ml \/ 800ml\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e\n\u003cstrong\u003eInner Material:\u003c\/strong\u003e SUS316 stainless steel\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e\n\u003cstrong\u003eOuter Material:\u003c\/strong\u003e 201 stainless steel\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e\n\u003cstrong\u003eLid Material:\u003c\/strong\u003e 304 stainless steel + food-grade PP\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Vacuum flask with handle, straight cup, tea strainer included\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e\n\u003cstrong\u003eThermal Performance:\u003c\/strong\u003e 6-12 hours insulation and cold locking\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e\n\u003cstrong\u003eColors:\u003c\/strong\u003e White, black, pink, green, purple\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Straight cup with ergonomic handle\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e\n\u003cstrong\u003eStyle:\u003c\/strong\u003e Sports \/ travel \/ office\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e CE, FCM, LFGB, SGS\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e\n\u003cstrong\u003eSafety Note:\u003c\/strong\u003e Allow hot liquids above 60 degrees Celsius to cool before sealing tightly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-applications\"\u003e\n\u003ch3\u003eApplication Scenarios\u003c\/h3\u003e\n\u003cp\u003eThe Vanguard Flask earns its place across the full arc of a day. The commuter pours coffee at 7 a.m. and finds it still hot at noon, because 6-12 hours of vacuum insulation does not negotiate with a busy calendar. The office worker brews loose-leaf oolong through the integrated strainer and measures a meeting by the tea left in the cup. The gym-goer fills the 800ml body with ice water before a session and drinks cold, clean hydration after the last set. The traveler crosses time zones with one familiar thermal companion, and the student keeps a 600ml flask on a desk that has no room for a mug collection. Every scenario shares the same quiet arithmetic: fill it once in the morning, and the temperature you chose is the temperature you get.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-faq\"\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How long does the Vanguard Flask keep drinks hot or cold?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The double-wall vacuum construction holds temperature for 6 to 12 hours depending on fill volume and ambient conditions, which comfortably covers a full workday or a long commute.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I brew loose-leaf tea directly in the flask?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. The integrated stainless steel tea strainer is designed for loose-leaf steeping, so you can brew real tea without tea bags and without leaves floating in every sip.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What materials touch my drink?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The inner chamber is SUS316 stainless steel, and the lid uses 304 stainless steel with food-grade PP, both certified to CE, FCM, LFGB, and SGS food-contact standards.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the lid safe with very hot liquids?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, but please allow freshly boiled water to cool below 60 degrees Celsius before sealing the lid tightly, since trapped steam pressure can build up inside a vacuum flask.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Which capacity should I choose?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The 600ml size suits commutes and bags, while the 800ml covers a full workday or long outdoor sessions. Both share the same insulation performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the flask leak-resistant in a bag?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The 304 stainless and PP lid seals securely, and the anti-slip base adds stability. For best results, keep the flask upright and avoid overfilling.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-gallery\" style=\"margin-top: 30px; text-align: center;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S311337029dc345508fdbbef10f6714eew.webp?v=1787616535\" alt=\"The Vanguard Flask vacuum thermos with tea strainer\" loading=\"lazy\" style=\"max-width: 100%; margin: 10px 0;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S1b72a650f4384dc58879d7cef1ea60e4X.webp?v=1787616534\" alt=\"The Vanguard Flask vacuum thermos with tea strainer\" loading=\"lazy\" style=\"max-width: 100%; margin: 10px 0;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S742648d0831541b6ac307e532b76b1e4G.webp?v=1787616534\" alt=\"The Vanguard Flask vacuum thermos with tea strainer\" loading=\"lazy\" style=\"max-width: 100%; margin: 10px 0;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S4491fb3b36a74c3b875ef0af42cc0b5eN.webp?v=1787616534\" alt=\"The Vanguard Flask vacuum thermos with tea strainer\" loading=\"lazy\" style=\"max-width: 100%; margin: 10px 0;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sc678608fb89c45e0bc033dae497de6fcf.webp?v=1787616534\" alt=\"The Vanguard Flask vacuum thermos with tea strainer\" loading=\"lazy\" style=\"max-width: 100%; margin: 10px 0;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S4bb69525903e43b9ba685f6b85940a999.webp?v=1787616534\" alt=\"The Vanguard Flask vacuum thermos with tea strainer\" loading=\"lazy\" style=\"max-width: 100%; margin: 10px 0;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S699a272ab5a547da87698c39bcfaad60d.webp?v=1787616534\" alt=\"The Vanguard Flask vacuum thermos with tea strainer\" loading=\"lazy\" style=\"max-width: 100%; margin: 10px 0;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S3d38e0dc93a54eec8765f5d90651752dY.webp?v=1787616534\" alt=\"The Vanguard Flask vacuum thermos with tea strainer\" loading=\"lazy\" style=\"max-width: 100%; margin: 10px 0;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S1a120f67ae3a48949070c8155b67b0b07.webp?v=1787616534\" alt=\"The Vanguard Flask vacuum thermos with tea strainer\" loading=\"lazy\" style=\"max-width: 100%; margin: 10px 0;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S2b3abfcbc8b348068477bb5b821f2d9aY.webp?v=1787616534\" alt=\"The Vanguard Flask vacuum thermos with tea strainer\" loading=\"lazy\" style=\"max-width: 100%; margin: 10px 0;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Secd5289191944d4b98a3366abe5bc28dn.webp?v=1787616534\" alt=\"The Vanguard Flask vacuum thermos with tea strainer\" loading=\"lazy\" style=\"max-width: 100%; margin: 10px 0;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S97bdec3926084fea835e1d5f53fb279fy.webp?v=1787616534\" alt=\"The Vanguard Flask vacuum thermos with tea strainer\" loading=\"lazy\" style=\"max-width: 100%; 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