Thermosteel Bottles

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Insulated bottles built in three layers

A Pearlpet Thermosteel bottle is not a single piece of metal. Inside is a food-grade stainless steel bottle that holds your drink. Wrapped around it is a layer of PU insulation that slows heat moving in or out. Outside is a tough plastic body that takes the knocks and stays comfortable in your hand.

That combination is why chai stays hot on a winter commute and water stays cold through a summer afternoon, while the outside of the bottle never gets too hot to hold. The Sprint, Milo and Leo ranges cover 600 ml and 800 ml, with prices starting at Rs.350.

If you would rather carry something lighter for everyday water, look at our single-wall steel bottles or BPA-free PET bottles.

Frequently asked questions

What is a Pearlpet Thermosteel bottle made of?

Three layers: a food-grade stainless steel inner bottle that holds the drink, a PU insulation layer around it, and a durable plastic outer body. The steel keeps the taste clean, the PU layer holds the temperature and the plastic shell protects the bottle.

How long does a Thermosteel bottle keep drinks hot or cold?

Hours rather than minutes. Filling the bottle right to the top and keeping the cap closed makes the biggest difference — a half-empty bottle loses temperature much faster than a full one.

Does the outside of the bottle get hot?

No. Because the insulation sits between the steel inner bottle and a plastic outer body, the outside stays comfortable to hold even when the drink inside is hot — unlike a single-wall steel bottle.

How should I clean and care for an insulated bottle?

Hand wash only. Warm water, a little dish soap and a bottle brush is all it needs; rinse well and leave the cap off to dry. Keep it out of the dishwasher, microwave and freezer — heat and freezing both damage the insulation layer.

What sizes do Pearlpet insulated bottles come in?

600 ml and 800 ml across the Sprint, Milo and Leo ranges. The 600 ml suits a school or office bag; 800 ml is the better choice for the gym, travel and long days out.