36-Hour Ice Lock. Zero Bag Leaks.
Engineered with a copper-lined 304 stainless steel vacuum core, a thread-locked chug spout that never pops open next to your.
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Built from medical-grade 18/8 stainless steel with a two-stage monochrome lid that solves bag floods, sweaty desks, and hidden straw grime.
Double-wall SUS304 stainless steel with a 2.4mm vacuum gap keeps ice cubes solid through hot lake afternoons and overnight road trips.
Forget hair-trigger push buttons. The raised chug spout cap threads down onto a deep silicone O-ring tested to 15 PSI without a single drop escaping.
Integrated directly into the side of the lid collar, the sculpted handle hooks onto two fingers on the go and folds flat so it never snags zippers.
Zero exterior condensation on wood furniture or paperwork, finished in a cohesive jewel-like baked lacquer from rounded shoulder to spout cap.
Unscrew only the top raised spout cap in 1.5 smooth turns for quick, high-flow drinking on the move—while the main collar stays sealed to block ice splashes.
Flip out the color-matched side carry loop to hook the bottle effortlessly onto two fingers while juggling keys, coffee, or a gym bag, then fold it flat.
Unscrew the full monochrome lid assembly to drop full-size freezer ice cubes straight into the electro-polished 18/8 stainless chamber and rinse clean in seconds.
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24 oz Double-Wall Vacuum Insulated 18/8 Stainless Steel Bottle with Leak-Proof Screw Spout Cap & Flush Hinged Carry Loop
Backed by our 30-Day Money-Back Trial & Full Cosari Guarantee.
$34.99 $69.99 Free Tracked Shipping (5–7 Days) Included
In Stock: Delivers in 5–7 Business Days. Free insured US delivery with tracking.
30-Day Money-Back Guarantee plus a full 2-Year Warranty.
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Two-Stage Leak-Proof Lid Architecture: Designed for real life in motion: twist off the compact raised spout cap for controlled chugging without ice hitting your teeth, or unscrew the full 2.1-inch collar to load ice and clean.
Pure 18/8 (SUS304) Taste Integrity: The electro-polished medical-grade stainless steel interior is 100% BPA-free, phthalate-free, and non-leaching—so water tastes crisp and never holds onto yesterday's electrolytes.
Care & Longevity Instructions: Hand-wash the high-gloss lacquered body and monochrome screw-on lid with warm soapy water. A spare food-grade silicone O-ring is included in the box for multi-year peace of mind.
Free 5–7 Day US Shipping: Every order ships free with full tracking and delivers in 5 to 7 business days.
30-Day Trial: Try it at home for 30 days risk-free. Need help? Email us anytime at support@buycosari.com.
2-Year Warranty: If anything goes wrong within 2 years, we replace it free of charge or refund your order in full.
Most flip-straw lids hide black mildew inside unreachable silicone folds within 3 weeks. Our smooth threaded chug spout rinses spotless under the tap in 5 seconds.
Toss it sideways next to your MacBook Pro, tablet, or leather planner. Deep mechanical threads and dual silicone gaskets guarantee a bone-dry bag.
From the rounded steel shoulders to the sculpted lid collar and hinged side loop, every component is color-matched in a rich, jewel-like finish.
Cosari GlaceFlask ProStandard Competitors
| Feature | Cosari GlaceFlask Pro | Standard Competitors |
|---|---|---|
| Horizontal Laptop Bag Leak Test | 100% Dry (Deep Screw-Thread Spout) | Fails (Push-Buttons & Flip-Straws Pop Open) |
| Solid Ice Retention in 95°F Heat | Up to 36 Hours (Copper Vacuum Core) | 12–18 Hours (Standard Single Vacuum) |
| Lid Cleaning & Mold Prevention | 5-Second Rinse (Zero Straw Crevices) | Requires Tiny Brushes (Traps Black Mildew) |
| Carry Handle Design | 180° Flush-Folding Side Handle Loop | Bulky Fixed Top Handle or None |
| Retail Price | $34.99 (or $24.49/ea in 3-Pack) | $40.00 – $45.00+ |
Swipe left for steps 2 and 3
Unscrew the main monochrome collar and drop full-size freezer ice cubes and filtered water straight into the 2.1-inch stainless steel opening.
Thread the main lid snug, twist the raised spout cap closed for a 100% leak-proof seal, and flip out the hinged side carry handle loop.
Unscrew only the small raised spout cap in one quick turn to enjoy crisp, frost-cold water at your desk, gym, or lake with zero condensation.
This has become one of our favorite bottles to grab every day. We fill it with ice and water, and everything stays crisp and cold well beyond the day. No condensation on the outside and absolutely no leaking so far.
Took this to the lake on a really hot day, and the ice barely melted. The bottle feels durable without being heavy. The screw-on lid, raised spout cap, and hinged carry loop all seal tightly, so nothing leaked in my bag.
Thoroughly impressed with this vacuum bottle. The features are simple but really functional, and it keeps drinks amazingly cold. Ice does not just last for a few hours in mine—it has lasted for days. Superior product all around.
Excellent sturdy bottle for the gym and everyday errands. The screw-top spout cap closes tightly, and the hinged side handle makes it easy to carry. I have experienced zero leakage, even when it gets tipped over in my gym bag.
This is a really well-made thermos. I have only tested it with cold drinks, so I cannot comment on warm ones, but it keeps water cold nicely. The handle is sturdy, and the twist-off spout cap will not pop open inside a bag.
I bought the glossy orange bottle and absolutely love it. The design feels thoughtful, my water stays cool, and the monochrome finish looks so stylish. Even the lid and handle match, which gives it a really clean look.
I have had my TYESO bottle for about a year and still love it. Ice stays cold, and the narrow chug spout is comfortable to drink from. I can toss it in my backpack beside my laptop without worrying about spills.
How perfect is this bottle? I love the glossy monochrome lid-and-body finish and the clean TYESO print near the base. It keeps water cool, and the raised spout cap makes it really easy to drink while I am out.
Keeps my water cold for hours, and the hinged handle is convenient when my hands are full. One practical tip: hand-wash the plastic spout cap and silicone seal carefully instead of tossing them around in the dishwasher. Mine still look great.
I love the sleek cylindrical shape and the hinged carry loop for road trips. The straight profile fits well in my car door pocket and deeper console cup holders. It may sit tall, but it is still easy to grab while parked.
$34.99 $69.99 Free Tracked Shipping (5–7 Days) Included
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No. Both the main wide-mouth collar and the raised chug spout cap use deep continuous screw threads backed by compressed food-grade silicone O-rings. Because there are no push-buttons or flip-straws to accidentally unlatch, it stays 100% sealed in any orientation.
Never. The double-wall vacuum chamber with an internal copper lining completely stops thermal transfer to the outer wall, keeping the high-gloss monochrome exterior bone-dry even when filled with ice water on humid summer days.
Yes. Unscrewing the main monochrome lid collar opens a generous 2.1-inch (53mm) wide mouth that easily accepts full crescent and square ice cubes straight from your freezer dispenser.
No straw is required. You drink directly from the smooth, raised chug spout by tilting the bottle—giving you crisp, high-flow hydration with zero hidden straw tubes or bite valves to trap mildew.
We recommend hand-washing both the glossy lacquered stainless steel body and the monochrome screw-on lid with warm soapy water and a soft bottle brush. Avoid high-heat dishwashers so the silicone gaskets and high-gloss finish last for years.
Every order is backed by our 30-Day Ice-Hold & Dry-Bag Money-Back Guarantee plus a 2-Year Thermal Vacuum Warranty. Test it for a full month; if you aren't thrilled, send it back for a full refund.