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-insulated: 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.