Ocemida H2Stash™ - Vacuum Insulated 316L Stainless Steel Water Bottle (Plastic Free)

The H2Stash™ is a 1-litre (34oz) vacuum-insulated bottle built on one non-negotiable rule: nothing but surgical-grade steel ever touches your water. No plastic cap insert. No plastic threading. No plastic spout. None. 0 Plastic Parts. Anywhere. 316L Surgical Steel Interior 24hr Cold Retention ∞ Lifetime Warranty The Problem You're drinking plastic. Every single day. In 2024, Columbia University researchers found an average of roughly 240,000 plastic fragments in a single litre of bottled water, most of them nanoplastics small enough to pass into your bloodstream. So you did the smart thing: you switched to a "stainless steel" bottle. Here's the part nobody tells you. Most "stainless steel" bottles hide plastic exactly where you can't see it: plastic-lined caps, plastic spout inserts, plastic gaskets, plastic threading. Every sip drags water across those surfaces. Every twist of the lid grinds plastic against plastic. The bottle you bought to escape microplastics is quietly making more of them. Microplastics have now been detected in human blood, lung tissue, breast milk, and placentas. The science is still emerging, but the principle is simple: a bottle that's supposed to protect you from plastic shouldn't contain any. The Solution Zero plastic. Anywhere. Period. The interior walls are food-grade 316L surgical stainless steel. The exterior is food-grade 304 stainless steel. The entire cap, threading, walls and contact surface, is hollow 316L steel with no plastic insert filling the inside. The only non-metal component in the entire bottle is the food-grade silicone gasket that creates the airtight seal. And silicone is not plastic. Unscrew the cap of the bottle you own right now and look inside it. Then look inside ours. That's the difference. 🛡️ Lifetime Warranty ↩️ 60-Day Risk-Free Trial 🚚 Free Shipping CA & US The hollow steel cap changes everything. The cap is where manufacturers cut corners, because it's the one place you never inspect. Pick up almost any "stainless steel" bottle and unscrew it. You'll find a plastic disc, a plastic insert, or a plastic-lined chamber sitting directly above your water. The H2Stash™ cap is engineered as a fully hollow stainless steel structure. The threading is steel. The walls are steel. The contact surface is steel. The only thing that isn't metal is the food-grade silicone ring that seals the cap to the bottle. 🧪 Silicone is Not Plastic It's an inert, non-toxic, medical-grade material made from silica (sand), not petroleum. Used in surgical implants, baby bottle nipples, and pharmaceutical seals. 🛡️ No Leaching, No Shedding Silicone doesn't break down into microparticles the way plastic does. It won't leach chemicals into hot or cold liquids. ✨ Built to Outlast You Food-grade silicone holds its seal for decades without cracking, hardening, or degrading. And if it ever fails, the lifetime warranty covers it. The Materials Almost every steel bottle is 304. This one isn't. Here's what most brands hope you never look up: "stainless steel" isn't one material. Nearly every bottle on the market, including the big names, uses 304-grade steel everywhere - the grade you'll also see written as 18/8 or SUS304. 304 is a good steel. But there's a higher grade, and the difference matters when it's holding what you drink all day. 316 is 304 plus molybdenum - an alloying element that makes the steel dramatically more resistant to corrosion, acids, and salts, and far less reactive with whatever it touches. It's the grade required for surgical implants, pharmaceutical reactors, and marine hardware. It also costs more, which is exactly why most bottle brands skip it. 304 Steel (most bottles) 316 Steel (H2Stash™ interior) Also known as 18/8 SUS304 · EN 1.4301 SUS316L EN 1.4404 · UNS S31603 Contains molybdenum ✕ ✓ Corrosion resistance Good Superior Resists acids & salts (lemon water, electrolytes) Moderate Excellent Reactivity with contents Low Near-inert Trusted for Kitchen equipment Surgical implants Verified, Not Just Claimed Any brand can say "316." We publish the lab results. The steel in the H2Stash™ interior is certified by POSCO, one of the world's largest stainless steel producers, under an EN 10204 Type 3.1 mill test certificate - meaning every batch is chemically analyzed in the lab, not just declared compliant on paper. The measured composition of our steel: 2.05% Molybdenum (Verified) 16.6% Chromium 10.0% Nickel 316L Low-Carbon Medical Grade Molybdenum is what separates 316 from ordinary 304 - and ASTM A240 requires at least 2.00% of it to qualify. Our steel measures 2.05%, lab-verified. It's also 316L (designated SUS316L in Japan, EN 1.4404 in Europe), the low-carbon variant chosen for medical implants and pharmaceutical equipment because it's even more corrosion-resistant than standard 316. The full mill certificate is available on request. 316L Surgical Steel - Interior & Cap Everywhere your water touches gets the surgical grade: the interior walls and the entire cap. Exceptionally non-reactive, no metallic taste, no corrosion - even with citrus, electrolytes, or daily hot drinks. 304 Food-Grade Steel - Exterior The same 18/8 grade used in restaurant kitchens, commercial brewing, and food processing equipment. 304 is incredibly durable and handles daily use, drops, and dishwashers without flinching. It never touches your water - so we put the premium grade where it counts instead of where it shows. Vacuum Insulated Double-wall insulation. Real temperature performance. Between the 316L interior and the 304 exterior sits a vacuum chamber. No air, no conduction, no heat transfer. That's what keeps your water exactly the temperature you poured it. 24 hours cold Ice still rattling at the bottom the next morning 12 hours warm Tea, warm lemon water, or coffee that still tastes like coffee How It Compares What "plastic-free" actually means. Plastic Bottle Typical Steel H2Stash™ Plastic-Free Body ✕ ✓ ✓ Plastic-Free Cap ✕ Plastic insert ✓ 316 Surgical Steel Interior ✕ 304 only ✓ Lab-Verified Steel Grade ✕ Claimed only Mill certificate Vacuum Insulated ✕ Some ✓ No BPA / Phthalates ✕ Cap risk ✓ Microplastic Shedding High Low None Lifetime Warranty ✕ Rare ✓ Key Features Every detail, considered. 🚫 100% Plastic-Free Construction Body, interior, cap, threading, spout. Every component is metal or silicone. There is no plastic anywhere. ⚙️ Hollow Steel Cap No plastic disc, no plastic insert, no plastic liner. The cap is a fully hollow stainless steel structure with silicone-only sealing. 💧 Leak-Proof, Airtight Seal Precision steel threading and a food-grade silicone gasket lock down an airtight seal. Toss it in a gym bag, a backpack, a carry-on. Nothing escapes. ⚗️ 316L Surgical Steel Where It Counts The interior walls and cap use the same 316L grade trusted in surgical implants and pharmaceutical manufacturing. ❄️ Vacuum-Sealed Insulation Double-wall construction with a true vacuum chamber. Up to 24 hours cold, up to 12 hours warm. 🧴 No Aftertaste, No Smell Steel and silicone don't absorb flavours or odours. Your water tastes like water. Always. ♾️ The Last Bottle You'll Buy Stainless steel doesn't crack, shatter, or break down. Silicone doesn't perish. And the Ocemida Lifetime Warranty backs it all, for as long as you own it. Perfect For Who carries the H2Stash™? 🌱 The Microplastics-Aware You've read the studies. You've seen the research on plastic particles in human tissue. You're done compromising on what touches your water. 👶 Parents & Caregivers If you wouldn't give your child a plastic bottle, you shouldn't accept hidden plastic in your own. Same standard, no exceptions. 🏋️ Athletes & Biohackers You optimize everything else. Don't undo the work by drinking from a bottle that's shedding plastic into your hydration. 🔍 Anyone Tired of Greenwashing You want a bottle that's actually what it claims to be - all the way through, with nothing hidden inside the cap or under the lining. Specifications The full picture. Capacity 1 Litre (33.8 fl oz) Interior 316L Surgical Stainless Steel (SUS316L / EN 1.4404) - mill-certified, EN 10204 3.1 Cap 316L Stainless Steel (hollow construction) Exterior 304 (18/8) Food-Grade Stainless Steel (SUS304 / EN 1.4301) Cap Seal 100% Food-Grade Silicone Insulation Double-Wall Vacuum Sealed Cold Retention Up to 24 hours Hot Retention Up to 12 hours Weight 450 g (15.9 oz) Dimensions 11.8" x 4" diameter Plastic Parts None BPA / Phthalates / PFAS None Finish Brushed Stainless Steel Care Hand wash or dishwasher (top rack) Warranty Ocemida Lifetime Warranty FAQ Common questions, straight answers. Isn't every "stainless steel" bottle plastic-free already? No. Almost every steel bottle on the market uses plastic in the cap - either as a liner, a threaded insert, or a sealing disc. Many use plastic spouts and plastic-coated paint on the exterior. The H2Stash™ is one of the only bottles built without plastic anywhere in its construction. The cap has a silicone seal. Isn't silicone just another plastic? No, silicone is chemically distinct from plastic. It's made from silica (sand), not petroleum, and its molecular structure is fundamentally different. Silicone doesn't break down into microparticles, doesn't leach chemicals, and is used widely in medical implants and infant feeding products. Food-grade silicone is one of the safest sealing materials available. Does an all-steel cap leak? No. The steel-on-steel threading is machined for precision, and the food-grade silicone gasket creates a fully airtight, leak-proof seal. You can carry it sideways in a bag without a drop escaping. If the seal ever fails, the lifetime warranty covers it. Does steel make water taste metallic? Not with 316. The metallic taste people associate with cheap bottles comes from lower-grade, more reactive steel. 316 contains molybdenum, which makes it exceptionally inert - it's the same reason it's used in pharmaceutical equipment. Your water tastes like water, nothing else. Why does it cost more than a regular steel bottle? Because a hollow 316 steel cap is genuinely harder and more expensive to manufacture than dropping a plastic insert into a steel shell - which is exactly why almost nobody does it. You're paying once for a bottle with no plastic, no compromise, and a lifetime warranty. Most people replace a cheap bottle every year or two; this one you don't. How do I know the steel is actually 316 and not relabeled 304? Because we don't ask you to take our word for it. The steel is produced by POSCO, one of the world's largest stainless manufacturers, and comes with an EN 10204 Type 3.1 mill test certificate: a batch-level chemical analysis performed in the lab. The verified composition shows 2.05% molybdenum (ASTM 316 requires a minimum of 2.00%), confirming genuine 316L grade. Most bottle brands can't show you this document. We can - just ask. Why 316 inside and 304 outside? 316 is the higher-grade steel - more corrosion-resistant, more inert, used in surgical and pharmaceutical applications. We use it everywhere your water touches: the interior walls and the cap. The exterior is 304, which is still food-grade and incredibly durable, but doesn't need 316's premium properties since it never contacts your water. This approach gives you surgical-grade purity where it matters and proven durability where it doesn't. Is it dishwasher safe? Yes. Steel and silicone are both dishwasher safe. With no plastic parts, there's nothing to warp, melt, or degrade over time. Can I use it for hydrogen water, hot tea, coffee, or anything else? Yes to all of the above. The H2Stash™ was engineered with hydrogen water in mind - because if a bottle can keep hydrogen molecules contained, it can handle anything. Cold water, hot beverages, infused water, electrolyte drinks. The inert steel and silicone won't absorb flavours between uses. One Bottle. Zero Compromise. Try the H2Stash™ risk-free for 60 days. Drink from it every day for two months. If you don't love it, send it back. And if you keep it, it's the last bottle you'll ever buy - covered for life, with no plastic sneaking into your hydration when you're not looking. 🛡️ Lifetime Warranty ↩️ 60-Day Guarantee 🚚 SHIPS FROM CANADA & US