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24H Cold
Dishwasher Safe
Cup-holder Friendly
Lifetime Warranty
Stainless Steel Water Bottles | BPA Free & Leak-Proof | OISIZ
Our stainless steel water bottle collection is built for people who take hydration seriously. Whether you're heading to the gym, packing for a commute, or spending the day outdoors — OISIZ bottles keep your drinks cold for 24 hours and hot for 12, without compromise.
Crafted from food-grade 316 stainless steel, every bottle is 100% BPA free, leak-proof, and built to last. Our signature Vic-wing 24oz and 20oz bottles feature a patented 2-in-1 sip and chug lid — the only bottle you'll ever need. If you're shopping for your child, our kids water bottle collection uses the same premium 316 stainless steel build.
From $19.99. Free shipping on orders over $39.99.
Why Choose OISIZ Water Bottles?
● 24-Hour Cold, 12-Hour Hot — Double-wall vacuum insulation locks temperature in — ice cold all day, piping hot all morning. No condensation, no compromise.
● 316 Stainless Steel — Food-grade 316 stainless steel means no metal taste, no rust, and no toxins. The same grade of steel we use in our kids water bottles — because we never cut corners on material.
● 100% BPA Free — Zero plastic in contact with your drink. Every OISIZ bottle is completely BPA free and safe for daily use.
● Patented 2-in-1 Sip & Chug Lid — Switch between straw sipping and wide-mouth chugging in one click. One lid, two ways to drink, zero leaks — even upside down.
● Leak-Proof Guarantee — The lid locks completely shut. Into your gym bag, your car cup holder, your desk — nothing spills, ever. Need a replacement lid or straw? We stock those in our accessories collection.
● Premium Quality, Honest Price — High-end hydration starting at $19.99. No brand tax, just a genuinely better bottle.
Built Different. Built Better.
Every OISIZ water bottle is engineered for real life — not just for looks. Here's what makes each bottle in this collection worth it:
Vic-wing 24oz — Our Best Seller
The Vic-wing 24oz is our flagship bottle — trusted by gym-goers, commuters, and outdoor enthusiasts across the USA. The patented 2-in-1 sip and chug lid lets you switch between straw mode and wide-mouth mode in seconds, and the foldable ergonomic handle makes it easy to carry anywhere. It fits standard cup holders and won a 2025 Muse Design Award Silver for good reason.
● Capacity: 24oz — ideal for all-day hydration
● Insulation: Triple-wall vacuum — cold 24 hours, hot 12 hours
● Lid: Patented 2-in-1 sip and chug lid with lock
● Material: 316 food-grade stainless steel
● Best for: Gym, office, commute, outdoor use
Vic-wing 20oz — The Compact Version
Everything you love about the Vic-wing, in a lighter carry. The Vic-wing 20oz is perfect for those who want the same insulation and leak-proof performance without the extra size. Great for travel, shorter days, or anyone who prefers a more compact bottle.
● Capacity: 20oz — lighter, easier to carry
● Insulation: Double-wall vacuum — same cold/hot performance
● Best for: Travel, minimalists, shorter outings
Ombre Collection — 24oz & 14oz
For those who want hydration and style in equal measure. The Ombre 24oz and Ombre 14oz bring a gradient finish that turns heads — but underneath, it's the same 316 stainless steel, BPA free construction, and double-wall insulation. Perfect for gifting or for anyone who wants their bottle to say something about them.
● Available in: 24oz (full-day carry) and 14oz (light carry)
● Design: Gradient ombre finish — a statement piece
● Best for: Gifting, lifestyle use, aesthetic buyers
How Your OISIZ Bottle Works
1 Choose Your Size
Pick your perfect size — 24oz for all-day hydration, 20oz for a lighter carry, or 14oz if you want a compact option. Not sure which to go for? Our guide to the best water bottles covers exactly what to look for.
2 Fill It Up
Add ice-cold water, hot coffee, juice — whatever you're drinking today. The wide-mouth opening makes filling effortless, and it fits a standard bottle brush for easy cleaning. Our tumblers are also a great option if you prefer a wider opening for your morning coffee.
3 Choose Your Lid Mode
Click the 2-in-1 lid into straw mode for slow, controlled sips — or flip it open to chug mode for big gulps after a workout. Switch between modes with one hand, anytime.
4 Lock & Go
Twist the lid shut and lock it completely. No leaks in your bag, no spills on your desk. Your drink stays at the right temperature for hours — whether you're commuting, training, or just at your desk.
5 Clean in Seconds
The wide mouth fits a standard bottle brush. Lid and straw are dishwasher-safe. If you ever need a replacement lid, straw, or cleaning brush, we stock those in our accessories collection.
Why 5,000+ US Customers Trust OISIZ
We don't just sell water bottles — we stand behind every single one. For answers to the most common questions about our bottles, materials, and care instructions, visit our FAQ page.
● 5,000+ Happy Customers — Trusted by customers across the USA, Germany, UK, and Japan.
● 2025 Muse Design Award — Silver Winner for the Vic-wing Bottle — recognized for design excellence and real-world functionality.
● Lifetime Warranty — We back every bottle for life. Manufacturing defect? We'll replace it. No fine print.
● Fast USA Shipping — Ships within 1-2 business days. Delivered in 3-7 business days.
● Real Customer Reviews — Every review on our site is from a verified buyer. No fake stars.
● Eco-Friendly Choice — One OISIZ bottle replaces 500+ single-use plastic bottles. Made with solar-powered manufacturing. If you're buying for children too, our kids water bottle range carries the same eco commitment.
Your Perfect Water Bottle Is Waiting
Premium 316 stainless steel. BPA free. 24-hour cold. Lifetime warranty. Starting at just $19.99. Join 5,000+ customers who've made the switch to OISIZ. Looking for something for the whole family? Browse our kids water bottle collection, our tumblers, or pick up a Christmas gift set for someone special.