Question 1

How does nidroo work?

Accepted Answer

You wear it on your head for about 20 to 30 minutes at night. It sends out slow, rhythmic cooling pulses that calm the part of your brain still chewing on the day's problems. It is lightweight [under 100gms ] and makes no sound or vibrations. Sensors in the band track your brain activity as you doze off, and once they pick up that you're actually falling asleep, the cooling winds down on its own. You take it off when you wake up.

Question 2

Whats your shipping and return policy?

Accepted Answer

You've got 30 days from delivery to decide if it's right for you. If it doesn't work out, send it back for a full refund. We'll share exact shipping carriers and delivery windows once we're closer to fulfilling orders.

Question 3

How long does the Nidroo battery last?

Accepted Answer

A full charge gets you through 5 to 7 sessions. If you're using it every night, plan on charging it about once a week.

Question 4

Science behind nidroo?

Accepted Answer

Cooling the forehead is a well-established way to bring down nervous system arousal before sleep, it's part of why a cool room helps you sleep better than a warm one. We paired that with EEG and EOG sensors built into the band, so instead of cooling on a fixed timer, the device reads your brain and eye activity and backs off once it detects you're actually drifting off.

Question 5

How much does Nidroo cost?

Accepted Answer

Please refer to our buy page for pricing related queries.

Question 6

Does Nidroo make any noise or vibrate while I sleep?

Accepted Answer

No. It runs completely silent, no clicking, no vibration, no hum. At under 100 grams, most people forget they're even wearing it within a few minutes.

Question 7

Is the cooling by Nidroo continuous?

Accepted Answer

No, the cooling slowly fades in and fades out over a few seconds interval, looping until you feel sleepy. This rhythmic cooling helps your brain calm down by giving it a predictable stimulus. You can adjust the intensity and interval of the cooling on our app.

Question 8

Is Nidroo patented?

Accepted Answer

Nidroo is in a patent pending stage right now.

Question 9

How much cooling does the Nidroo headband give?

Accepted Answer

It provides mild cooling. The cooling mainly acts as a signal for your brain, making it think it's safe to wind down. The cooling is highly controlled, not intense enough that you feel discomfort but not feeble enough that you don't feel anything. It is engineered to be in a range where you feel that rejuvenated relaxation feeling from second one. The pulsating nature of the cooling makes sure you continuously get to feel the cooling sensation.

Question 10

What kind of battery does Nidroo use? Is it safe?

Accepted Answer

Nidroo uses a rechargeable lithium-polymer battery, the same type used in most modern wearables and earbuds. The battery itself is BIS certified, and includes standard protection circuitry against overcharging, overheating, and short circuits.

Question 11

Does Nidroo come in multiple sizes or one size?

Accepted Answer

It comes in one size, with an elastic band and a hair safe velcro mechanism to adjust the size according to your head size.

Question 12

How fast do I feel sleepy while using Nidroo?

Accepted Answer

With Nidroo on, you start to doze off around the 15-25 minute mark, the clinically and optimally healthy range of sleep.

It saves you hours of sleep struggle that you might be otherwise feeling occasionally.

Question 13

Does Nidroo help me sleep better as well?

Accepted Answer

Yes. In a 15-night study comparing nights with and without Nidroo: Awake time during sleep dropped by about 70% REM sleep increased by 15% Deep sleep increased by 8% Overall sleep score went up by around 7 points on the nights Nidroo was used

Question 14

Why should I use Nidroo? Why not some breathing exercise or other methods?

Accepted Answer

You can definitely use other methods to help you sleep faster. In fact, we ourselves built some tools to help you sleep, for free. If these tools work for you, great. But Nidroo is designed to be a totally passive, set it and forget it solution. Most people can't maintain breathing exercises or other habits when they're stressed out, since those require active participation.

Frequently asked questions