Kitchen Appliances
Vacuum Insulated Flasks
Vacuum Insulated Flasks
Best Vacuum Flasks in India 2026 — Hot and Cold Flasks Compared
By Bikram Nath · Updated 2026-11-08 · How we pick · Affiliate disclosure: links earn a small commission
What are the best vacuum flasks in India?
As of : The Milton Flip Lid 1000 Thermosteel is our top pick for a vacuum flask because its listing states ISI certification, SS304 stainless steel inside and outside, hot or cold for 24 hours, a leak-proof flip lid and a 1-year warranty against manufacturing defects. This guide compares six vacuum flasks from Milton, Cello (two models), Borosil, Go24 pexpo and Solimo, using what each listing states: capacity, hot and cold hours, steel, lid type, ISI certification and warranty.
Stated capacities run from 500 ml to 1000 ml. Go24 pexpo's 1 litre tea and coffee flask suits pouring at home or in the office: its listing states a detachable lid with lock, a loop holder and a 24-month manufacturing warranty. Borosil's 850 ml bottle lists 304 grade steel on both walls, up to 22 hours hot and up to 24 hours cold.
Milton Flip Lid 1000 Thermosteel Vacuum Insulated Bottle, 1 L
The sensible default for a 1 litre flask: ISI certification, SS304 steel on both walls, a stated 24 hours hot or cold, a leak-proof flip lid and a 1-year warranty, per the listing.
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Quick Comparison
| # | Product | Best for | Brand | Price | Link |
|---|---|---|---|---|---|
| 1 | Milton Flip Lid 1000 Thermosteel Vacuum Insulated Bottle, 1 L | Top Pick | Milton | Check price on Amazon | |
| 2 | CELLO Duro Kent 720 ml Vacuum Insulated Flask | Office and travel | CELLO | Check price on Amazon | |
| 3 | Borosil 850 ml Double Wall Vacuum Insulated Bottle | Condensation-free carrying | Borosil | Check price on Amazon | |
| 4 | Go24 pexpo 3 Layer Vacuum Insulated Tea and Coffee Flask, 1 Litre | Serving tea and coffee | Go24 pexpo | Check price on Amazon | |
| 5 | Amazon Brand Solimo Stainless Steel Insulated Flask, 1000 ml | Picnics and day trips | Amazon Brand - Solimo | Check price on Amazon | |
| 6 | CELLO Lifestyle 500 ml Insulated Flask with Press Open Lid | One-hand drinking | CELLO | Check price on Amazon |
Our Top Picks
Capacity
1000 ml
Retention
Hot or cold for 24 hours (per listing)
Material
SS304 stainless steel inside and outside, copper coating
Lid
Leak-proof flip lid
Certification
ISI certified (per listing)
Warranty
1 year against manufacturing defects
Pros
- ✓ISI certification stated on the listing
- ✓SS304 stainless steel inside and outside, with copper coating that Milton says is for better temperature retention
- ✓Double walled vacuum insulation that the listing says keeps drinks hot or cold for 24 hours
- ✓1-year warranty against manufacturing defects in material and workmanship
Cons
- ✗The warranty excludes accidents, mishandling or tampering and needs the original bill endorsed by the seller
- ✗The listing does not state whether the lid is BPA free
“The sensible default for a 1 litre flask: ISI certification, SS304 steel on both walls, a stated 24 hours hot or cold, a leak-proof flip lid and a 1-year warranty, per the listing.”
Check price on Amazon
Capacity
720 ml
Retention
Up to 24 hours (per listing)
Material
Food grade stainless steel, rust resistant
Lid
Leakproof screw lid
Certification
ISI certified (per listing)
Warranty
1 year against manufacturing defects
Pros
- ✓ISI certification stated in the title
- ✓Double wall vacuum insulation that the listing says holds temperature for up to 24 hours
- ✓Leakproof screw lid and a coated finish
- ✓1-year warranty against manufacturing defects
Cons
- ✗The listing names food grade stainless steel but no steel grade
- ✗The warranty excludes accidents, mishandling or tampering and needs the original invoice
“A mid-size 720 ml flask for office and travel with ISI certification, a stated 24 hours and a leakproof screw lid, per the listing.”
Check price on Amazon
Capacity
850 ml
Retention
Up to 22 hours hot, up to 24 hours cold
Material
304 grade stainless steel inner and outer wall, powder-coated finish
Lid
Thread type lid, BPA-free plastic parts
Warranty
1 year against manufacturing defects
Pros
- ✓304 grade stainless steel stated for both the inner and outer wall
- ✓Condensation-free exterior that the listing says keeps hands and bags dry
- ✓BPA-free plastic parts stated on the listing
- ✓1-year warranty against manufacturing defects
Cons
- ✗Hot retention is stated at up to 22 hours, against up to 24 hours cold
- ✗The listing does not mention ISI certification
“Suits carrying in a bag: 304 grade steel on both walls, a condensation-free exterior and a thread type lid, with up to 22 hours hot and 24 hours cold, per the listing.”
Check price on Amazon
Capacity
1 litre
Material
Stainless steel, 3-layer insulation
Lid
Detachable lid with lock
Warranty
24 months manufacturing, plus 24-day free lid replacement
Pros
- ✓24-month manufacturing warranty and a 24-day free lid replacement, per the listing
- ✓Detachable locking lid that the listing says helps prevent leaks and drips while pouring
- ✓Integrated loop holder for carrying from kitchen to table, office or outdoor trips
- ✓Go24 pexpo describes the exterior as scratch-free
Cons
- ✗The listing gives no hour figure for heat retention
- ✗The listing does not mention ISI certification or a steel grade
“The pick for pouring tea or coffee at home or work: a 1 litre carafe-style flask with a locking lid, loop holder and a 24-month warranty, per the listing.”
Check price on Amazon
Capacity
1000 ml
Retention
Hot up to 24 hours or cold up to 24 hours
Material
304 grade stainless steel, 100% food-safe (per listing)
Lid
Leak-proof, BPA free lid with steel exterior
Pros
- ✓304 grade stainless steel stated on the listing
- ✓Hot up to 24 hours or cold up to 24 hours, per the listing
- ✓Leak-proof, BPA free lid; the listing calls it rust-free and condensation resistant
- ✓Wide body and tapered mouth that the listing describes as easy to clean
Cons
- ✗The listing states no warranty term
- ✗The listing does not mention ISI certification
“A 1000 ml flask for day-long trips with 304 grade steel, a BPA free leak-proof lid and a stated 24 hours hot or cold, though the listing gives no warranty.”
Check price on Amazon
Capacity
500 ml
Retention
24 hours hot and cold (per listing)
Material
Food grade stainless steel, BPA free
Lid
Leak proof, spill proof press open lid
Warranty
1 year against manufacturing defects
Pros
- ✓Press open lid that the listing says allows one-hand drinking
- ✓Leak proof and spill proof lid, per the listing
- ✓Food grade stainless steel, stated as BPA free and rust resistant
- ✓1-year warranty against manufacturing defects
Cons
- ✗The listing names no steel grade
- ✗The listing does not mention ISI certification
“The smallest flask here at 500 ml, for commuting, gym or school, with a press open lid for one-hand drinking and a 1-year warranty, per the listing.”
Check price on Amazon
Prices shown are pulled live from Amazon.in and refresh through the day. Amazon prices and availability change frequently — the price on the Amazon product page at the time of purchase is the one that applies. As an Amazon Associate, PakkaPick earns from qualifying purchases; your price is unaffected.
How we picked these vacuum flasks
Every pick on this page is matched to its exact Amazon India listing, and the specifications, warranty terms and features on each card come from that listing; a brand's own claims are attributed to the brand. We don't physically test the products in our guides, and we don't link to Amazon search results.Prices shown come from Amazon's data with the time they were fetched; the price at checkout can differ.
Our editorial process is one person — Bikram, based in Pune. The order of products on this page reflects our editorial ranking only. No brand paid for a place in this ranking. Each ranked pick earns us money only through its Amazon affiliate link — clicking through earns a small commission, your price stays identical.
Buying vacuum flasks in India — what to check
- Warranty:check that the listing states an Indian warranty and what it covers. Imported (grey-market) units may not be serviced by the brand's Indian service centres.
- Delivery and returns: Amazon shows the delivery date for your pincode and the return policy on each product page. Check both before ordering, especially if it is a gift or needed by a date.
- Keep the invoice: some brands ask you to register the product after purchase. Keep the Amazon invoice and read the warranty card that comes in the box.
What to Look For
- 1.Retention: the Milton Flip Lid 1000 states hot or cold for 24 hours; the Cello Duro Kent and the Solimo state up to 24 hours; the Cello Lifestyle listing describes it as a 24 hours hot and cold bottle; the Borosil 850 ml states up to 22 hours hot and up to 24 hours cold. The Go24 pexpo tea flask listing says 'for hours' and gives no figure.
- 2.Steel: Milton states SS304 stainless steel inside and outside with copper coating; Borosil states 304 grade on the inner and outer wall; Solimo states 304 grade stainless steel. The two Cello listings state food grade stainless steel without a grade, and the Go24 pexpo title states stainless steel.
- 3.ISI certification: the Milton Flip Lid 1000 and Cello Duro Kent listings state ISI certification. The Borosil, Go24 pexpo, Solimo and Cello Lifestyle listings do not mention it.
- 4.Lid: Milton lists a leak-proof flip lid; the Cello Duro Kent a leakproof screw lid; the Cello Lifestyle a press open lid for one-hand drinking; Borosil a thread type lid with BPA-free plastic parts; Go24 pexpo a detachable lid with lock for pouring; Solimo a leak-proof, BPA free lid with steel exterior.
- 5.Warranty: Go24 pexpo states a 24-month manufacturing warranty plus a 24-day free lid replacement. Milton, both Cello models and Borosil state 1 year against manufacturing defects. The Solimo listing states no warranty term.
Frequently Asked Questions
How long does a vacuum flask keep drinks hot?
Most flasks here state up to 24 hours: the Milton Flip Lid 1000, Cello Duro Kent and Solimo 1000 ml each list 24 hours hot or cold, and the Cello Lifestyle listing calls it a '24 hours hot and cold water bottle'. The Borosil 850 ml states up to 22 hours hot and up to 24 hours cold. The Go24 pexpo tea flask listing says 'for hours' without a figure.
Which vacuum flasks are ISI certified?
The Milton Flip Lid 1000 and the Cello Duro Kent 720 ml state ISI certification on their listings. The Borosil, Go24 pexpo, Solimo and Cello Lifestyle listings do not mention ISI certification.
Which vacuum flasks state 304 grade stainless steel?
The Milton Flip Lid 1000, Borosil 850 ml and Solimo 1000 ml state 304 grade steel. Milton lists SS304 inside and outside with copper coating, and Borosil lists 304 grade on the inner and outer wall. The two Cello listings state food grade stainless steel without naming a grade.
What size vacuum flask should I buy?
Size it to how much you drink away from home. On this page the Cello Lifestyle is 500 ml, the Cello Duro Kent 720 ml and the Borosil 850 ml. The Milton Flip Lid 1000, Solimo and Go24 pexpo tea flask are 1 litre.
What is the top pick in PakkaPick's “Best Vacuum Flasks in India” guide?
The top pick in PakkaPick's “Best Vacuum Flasks in India” guide is the Milton Flip Lid 1000 Thermosteel Vacuum Insulated Bottle, 1 L. The sensible default for a 1 litre flask: ISI certification, SS304 steel on both walls, a stated 24 hours hot or cold, a leak-proof flip lid and a 1-year warranty, per the listing.
What should I look for when buying a vacuum flask?
- Key factors: Retention: the Milton Flip Lid 1000 states hot or cold for 24 hours; the Cello Duro Kent and the Solimo state up to 24 hours; the Cello Lifestyle listing describes it as a 24 hours hot and cold bottle; the Borosil 850 ml states up to 22 hours hot and up to 24 hours cold. The Go24 pexpo tea flask listing says 'for hours' and gives no figure.
- Steel: Milton states SS304 stainless steel inside and outside with copper coating; Borosil states 304 grade on the inner and outer wall; Solimo states 304 grade stainless steel. The two Cello listings state food grade stainless steel without a grade, and the Go24 pexpo title states stainless steel.
- ISI certification: the Milton Flip Lid 1000 and Cello Duro Kent listings state ISI certification. The Borosil, Go24 pexpo, Solimo and Cello Lifestyle listings do not mention it.
How long does Amazon India take to deliver vacuum flasks?
Delivery time depends on your pincode and the seller. Amazon shows the delivery date for your pincode on each product page before checkout, so check it there for the pick you choose.
Are these vacuum flasks available with No-Cost EMI on Amazon India?
EMI and No-Cost EMI options depend on the product, the seller and your card. Amazon lists the options available for your payment method on the product page and at checkout.
Can I return vacuum flasks on Amazon if they don't work as expected?
Return and replacement terms are set per product and seller on Amazon.in. Check the return policy shown on the product page before you order, and keep the invoice for any warranty claim.
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Top Pick
Milton Flip Lid 1000 Thermosteel Vacuum Insulated Bottle, 1 L