Quick answer: The HYV CoreFlow is India's best entry-level BIS IS 17526:2021 certified insulated bottle in 2026 . At ₹899, it is the lowest price at which you can get genuine vacuum insulation with independent certification. 750ml, screw cap, food-grade 18/8 stainless steel, 24hr cold, 8hr hot. No extras — just the core insulation case, BIS certified.
PRODUCT REVIEW·4 min read·Updated May 2026
⚡ Quick Answer
The HYV CoreFlow is India's best entry-level BIS IS 17526:2021 certified insulated bottle in 2026. At ₹899, it is the lowest price at which you can get genuine vacuum insulation with independent certification. 750ml, screw cap, food-grade 18/8 stainless steel, 24hr cold, 8hr hot. No extras — just the core insulation case, BIS certified.
HYV CoreFlow — By the Numbers
₹899
Price — lowest BIS certified insulated bottle
BIS
IS 17526:2021 certified
Why the CoreFlow Exists
There's a meaningful gap between uncertified cheap bottles (₹200–700) and the mid-range HYV line (₹999+). The CoreFlow fills it: genuine vacuum insulation, genuine BIS IS 17526:2021 certification, genuine 18/8 stainless steel interior, at ₹899. No silicone boot, no special lid mechanism, no wide colour range — just the insulation and the certification that proves it.
CoreFlow vs FlipFlow — ₹100 More
| Feature |
CoreFlow |
FlipFlow |
| Price |
₹899 |
₹999 |
| Lid type |
Screw cap |
Quick-flip |
| One-handed use |
Two hands |
✓ One thumb |
| Colour options |
Indigo Blue, Arctic White |
Arctic White, Midnight Black, Electric Pink |
| Best for |
Budget entry point, desk |
Active use, gym |
✓ LOWEST BIS-CERTIFIED PICK
₹899
HYV CoreFlow
750mlBIS CertifiedVacuum InsulatedScrew Cap24hr Cold
The entry point into BIS IS 17526:2021 certified vacuum-insulated drinkware. At ₹899, genuine insulation, verified by BIS, 24hr cold retention. Indigo Blue, Arctic White.
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💡 The ₹100 Question
FlipFlow at ₹999 is ₹100 more than the CoreFlow. That ₹100 buys the quick-flip one-thumb lid. If you're primarily using the bottle at a desk, the CoreFlow screw cap is fine. If you're at the gym or cycling, the FlipFlow's one-thumb access is worth the ₹100 extra.
Frequently Asked Questions
Is the HYV CoreFlow worth ₹899?
Yes — it's the lowest price at which you get BIS IS 17526:2021 certified vacuum insulation from HYV. For budget-conscious buyers who need the certification but not the premium lid mechanisms, this is the right choice.
What is the difference between CoreFlow and FlipFlow?
CoreFlow (₹899): screw cap, 2 colours. FlipFlow (₹999): quick-flip one-thumb lid, 3 colours. The ₹100 difference buys the flip lid convenience.
Does the CoreFlow come in multiple colours?
Currently available in Indigo Blue and Arctic White.
Can I use the CoreFlow for hot drinks?
Yes — 8hr hot retention. The screw cap creates a full seal for hot liquids.
SHOP HYV
Real Insulation. BIS Certified. Entry Price ₹899.
All products BIS IS 17526:2021 certified. Free shipping above ₹699.
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