What is the CoreFlow?

The CoreFlow is HYV's most accessible insulated bottle — 750ml of double-wall vacuum insulation in a clean, straightforward design. No gimmicks, no complex lid mechanisms. Just reliable insulation at a price that makes sense.

What makes the CoreFlow worth buying over a cheaper bottle?

Cheap single-wall bottles sweat condensation, lose temperature within an hour, and often leach plastic into your water. The CoreFlow's double-wall vacuum insulation eliminates all three problems — no condensation, all-day cold retention, food-grade 18/8 stainless steel with no plastic contact surfaces.

What is the CoreFlow's lid type?

The CoreFlow has a clean screw-top lid — fully leakproof, easy to clean, and durable. Simplicity by design.

Is the CoreFlow good for daily office use?

Yes. The 750ml size is practical for a morning at the office, the screw lid is silent and discreet, and the stainless steel body doesn't retain odours or flavours.

What is the CoreFlow made from?

Food-grade 18/8 stainless steel body and lid. BPA-free. The CoreFlow has no plastic contact surfaces on the main body or lid interior.

Is the HYV CoreFlow BIS certified?

Yes. The HYV CoreFlow is certified to BIS IS 17526:2021, India's national standard for stainless steel vacuum insulated bottles. Certification means insulation retention was physically tested by an accredited lab.

How long does it keep water cold or hot?

The double-wall vacuum insulation keeps water cold for around 24 hours and hot for around 12 hours. Real retention depends on ambient temperature, fill level, and how often the lid is opened.

What material is the HYV CoreFlow made of?

Food-grade 304 stainless steel (18/8) inner and outer walls with a vacuum sealed between them. The steel is corrosion-resistant, does not add a metallic taste, and does not leach chemicals like plastic can.

Is the lid leak-proof?

Yes. The lid uses a food-grade silicone seal that stays leak-proof for bag carry, and disassembles fully for cleaning to prevent mould build-up.

What size is the HYV CoreFlow and who is it for?

The HYV CoreFlow is a 750ml bottle. Great for coffee, tea, short travel, and secondary hydration.

Rinse daily with warm water and a drop of dish soap. Deep-clean weekly with warm water + baking soda + a bottle brush. The lid disassembles fully so you can clean around the silicone seal — that's where cheap bottles trap mould.

Where can I buy the HYV CoreFlow?

The HYV CoreFlow is available on livehyv.com with free shipping over ₹499 and pan-India dispatch. It also appears in HYV's Shopify catalog and select retailers. Priced at ₹899 on livehyv.com.

HYV CoreFlow – Insulated Water Bottle | 750ml, 24-Hour Cold, Stainless Steel

Q: How long does it keep water cold?

24 hours cold and 12 hours hot with double-wall vacuum insulation.

Insulation that doesn't ask for a lot.

Rs. 899.00

Rs. 2,999.00

Save Rs. 2,100.00

Color: Indigo Blue

Quantity:

Spill-proof Sealed Tight Sealed tight

Keeps Hot & Cold Vacuum insulated

18/8 Food-grade Steel BPA-free

Free Shipping Orders above ₹499

7-Day Replacement Quality guarantee

4.7

Corporate Gifting/ Bulk Orders

For Custom Branding, Kindly Contact Us on +91 9910131881 and support@livehyv.com

HYV CoreFlow – Insulated Water Bottle | 750ml, 24-Hour Cold, Stainless Steel

750ml Insulated Bottle with Chugger Cap

Rs. 899.00

Rs. 2,999.00

Complete the kit

The pieces that go with it — added to the same order, shipped together.

Add a tumbler

Same insulation, sized for the desk.

HYV HydroFlow

1.2L Insulated Tumbler with Turn-and-Sip Lid

Rs. 1,299.00

HYV HydroPro

1.2L Insulated Tumbler with Inbuilt Straw Lid

Rs. 1,499.00

HYV HydroPop

1.2L Insulated Tumbler with Straw Lid

Rs. 1,699.00

HYV HydroMax

1.2L Insulated Tumbler with Straw Lid & Handle

Rs. 1,699.00

HYV OpenFlow

Insulated Tumbler with Built-In Bottle Opener

Rs. 799.00

Add a coffee mug

600ml, sized for the desk — hot or cold.

HYV ChillSip

Insulated Coffee Tumbler for Hot & Cold Drinks

Rs. 1,199.00

HYV DailySip

Insulated Coffee Tumbler

Rs. 1,199.00

Insulation that doesn't ask for a lot.

The HYV CoreFlow is HYV's most accessible bottle — 750ml of double-wall vacuum insulation in a clean, no-frills build. No magnetic base, no silicone boot, no add-ons. Just a solid insulated water bottle that keeps water cold for 24 hours and costs less. Ideal for everyday carry when you don't need the extras.

Key Features

✓ 750ml capacity — the right size for everyday carry
✓ 24-hour cold retention — double-wall vacuum insulation
✓ Clean, minimal design — no frills, no fuss
✓ Food-grade 18/8 stainless steel — no BPA, no plastic liner
✓ Value price point — HYV quality at an accessible price

Specifications

Capacity	750ml
Material	Food-grade 18/8 stainless steel
Insulation	Double-wall vacuum
Cold Retention	Up to 24 hours
BPA Free	Yes

CoreFlow vs LuxeSip/LuxeFlow

The CoreFlow is HYV's entry-level insulated bottle. If you want BIS certification and the silicone boot, go for the LuxeSip or LuxeFlow. The CoreFlow gives you the same stainless steel and vacuum insulation at a lower price without the premium add-ons.

Frequently Asked Questions

Is the CoreFlow BIS certified?
The CoreFlow is not the BIS-certified model in HYV's range. For BIS-certified options, see the LuxeSip, LuxeFlow, and MagFlex.

How long does it keep water cold?
Up to 24 hours with the cap sealed.

What is the replacement policy?
We offer free replacement within 7 days of delivery for manufacturing defects or damage on arrival. Contact us at support@livehyv.com with your order details and photos of the issue.

"Premium does not have to mean premium-priced. It has to mean no shortcuts."

The CoreFlow is the entry point to HYV — fewer accessories, same standards. 18/8 SS 304 steel, double-wall vacuum insulation, and a build quality that does not reflect its price.

The Build

Less accessories. Same standards.

750ml of 18/8 SS 304 food-grade stainless steel in a rubberised matte exterior. The CoreFlow is proof that price is not the reason to use lower-grade steel. HYV does not.

18/8 SS 304 throughout
Rubberised matte, scratch-resistant
Condensation-free exterior
Clean, minimal design

The Steel

304 grade. Where most save money, we do not.

The entry-level price point is exactly where 201-grade steel gets used most aggressively. HYV uses 304 grade in every product. The CoreFlow is no exception.

18/8 SS 304 — same as surgical-grade
Zero rust, zero odour retention
No leaching, no flavour transfer
BPA-free throughout

Performance Promise

Temperature. Held.

The numbers are real. We test every batch.

24h

Cold Retention

Starting 4°C · 35°C ambient · Delhi summer

12h

Hot Retention

Starting 80°C · 25°C ambient · Standard room

Results from controlled testing. Actual retention varies with ambient temperature, lid frequency, and starting temp.

In The Box

Everything included.
Nothing extra to buy.

⬡

CoreFlow Bottle

750ml · 18/8 SS 304 · Rubberised matte

◎

Screw-top Lid

Stainless steel · Carry handle · Airtight

Why HYV

Compared honestly.

✓

18/8 SS 304 — not 201 grade

Same steel used in surgical instruments.

✓

7-day quality replacement

Product issue? We replace it. No questions.

✓

HYV Direct Price

No marketplace commission passed to you.

✓

India-based support

Real people. Mon–Sat. Not a chatbot.

✓

BPA-free throughout

Every material. Every contact surface.

Specifications

Capacity: 750 ml
Lid: Standard screw
Net quantity: 1 N

• HYV CoreFlow 750ml insulated bottle (selected colour)
• Screw-top lid with carry handle
• HYV care card + 7-day replacement activation

• Capacity: 750ml
• Body: 18/8 Food-Grade Stainless Steel, 304 grade
• Insulation: Double-wall vacuum
• Cold retention: Up to 24 hours
• Hot retention: Up to 12 hours
• Dishwasher safe: Hand wash recommended. Hand wash body.
• Warranty: 7-Day Quality Replacement

• Hand wash body and lid with warm soapy water. Air dry completely.
• Do not microwave, freeze, or use abrasive cleaners on exterior.
• For stubborn odours: baking soda + warm water, soak 15 minutes.

Free shipping on all orders above Rs499— no minimum.

Dispatched within 24 hours (orders before 2 PM). Delivery: 3–7 business days across India.

7-day quality replacement guarantee for product issues — contact support@livehyv.com or call +91 9910131881.

Corporate and bulk orders: WhatsApp us directly.

HYV CoreFlow – Insulated Water Bottle | 750ml, 24-Hour Cold, Stainless Steel