Processing Time

We’re not a faceless warehouse pushing boxes down a conveyor belt.

Each order is carefully packed and prepared before shipping.

Please allow 1–3 business days for processing.

Once your order ships, you’ll receive tracking straight to your inbox.

Where We Ship

We currently ship to the following regions:

🇺🇸 United States
🇬🇧 United Kingdom
🇪🇺 European Union
🇦🇺 Australia

If your country isn’t listed and you really want in, email us — we’ll see what’s possible.

Shipping Times (Estimated)

Shipping times vary depending on your location and local customs processing.

USA: 5–10 business days
UK: 4–8 business days
Europe: 4–8 business days
Australia: 6–12 business days

Once your order leaves our hands, delivery times are controlled by the carrier and customs authorities. Tracking is always provided so you can follow your order every step of the way.

Duties, Taxes & Customs

Customs duties, import taxes, or handling fees are set by your country and are not included in your order total.

If fees are charged, they’re collected by customs — not us. We wish we could fight them for you, but unfortunately, that’s out of our hands.

Carriers & Tracking

Orders are shipped using trusted international carriers, selected based on destination and delivery speed.

Once your order ships, you’ll receive:

A tracking number
A tracking link
Full permission to check it more often than you’d like to admit

Delayed or Lost Parcels

International shipping can be unpredictable at times. Once your order is with the carrier, delays can happen — especially during customs processing.

If your tracking hasn’t updated for a while or your parcel appears lost, reach out to us and we’ll help investigate and support you as best we can.

Questions?

Email us anytime at support@grizxlab.com

We’re human, we reply, and we actually care.

We want you to feel confident about your purchase. If something isn’t quite right, we’re here to help.

We stand behind the quality of every GRIZX product. Due to the personal nature of this device, our policy is designed to ensure safety, hygiene, and fairness for all customers.

Hygiene & Use Policy

GRIZX NVR-1 is a personal-use breathing device that comes into contact with the mouth.

For hygiene and safety reasons, we do not accept returns or exchanges on any opened or used products, including items with broken hygiene seals.

Returns Window

We accept returns within 30 days of purchase, provided the item meets the conditions below.

Eligibility

We do not accept returns or offer refunds for:

• Opened or used products
• Items with broken hygiene seals
• Change of mind or personal preference
• Sale or discounted items
• Gift cards

How to Start a Return

To initiate a return or exchange, please email us at support@grizxlab.com with:

• Your order number
• The reason for the return
  

We’ll reply with next steps and return instructions.

Important Notes

• Returns must be sent back at the customer’s expense
• Original shipping fees are non-refundable
• We do not accept returns on:

1. Used items
2. Items with opened or used mouthpieces
3. Sale or discounted items
4. Gift cards

Faulty or Incorrect Items

If your order arrives damaged, faulty, or incorrect, please contact us as soon as possible.

Include photos if you can — we’ll make it right.

Refunds

Once your return is received and inspected, we’ll notify you of the outcome.

Approved refunds will be issued to your original payment method within a few business days.

Questions?

If you’re unsure whether your item qualifies for a return, reach out before sending it back — we’re happy to help.

📧 support@grizxlab.com

1. Slows the Breath Automatically

Airflow resistance that guides regulation
SHIFT introduces gentle resistance on the exhale, naturally encouraging a longer, steadier breath. Slower exhalation is associated with parasympathetic nervous system activation — the body’s built-in calming response.

What this feels like:
Your chest softens. The urgency fades. Your body settles before your mind catches up.

2. Makes Calm Visible

Real-time numerical breath feedback
SHIFT shows your exhale output as a clear numerical value, turning breathing into something tangible and measurable. This anchors attention in the present moment and reduces uncertainty during stress.

What this feels like:
Reassurance. Proof. Confidence that your breath is actually slowing.

3. Uses Visual Cues Your Nervous System Understands

Color-based biofeedback
The color scale progresses as your breath deepens, giving your nervous system a simple, non-verbal cue to follow. Visual feedback reduces cognitive load and supports regulation without instruction.

What this feels like:
You don’t have to think — you just follow the light.

4. Gives the Mind Something Steady to Hold

Counting and rhythm
As you exhale, SHIFT counts with you. Predictable rhythm and counting are known to reduce mental spirals by occupying attention and interrupting threat-focused thinking.

What this feels like:
Order replaces chaos. The mind steadies as the breath slows.

5. Builds Trust Through Memory

Saved breath results
SHIFT stores your most recent results, showing how your breath changes across moments. This reinforces self-trust and reminds you that regulation is possible — even when stress returns.

What this feels like:
“I’ve done this before. I know what value regulated exhale should be.”

6. Builds Exhale Capacity Over Time

Progress through use
With continued use, controlled slow breathing supports improved expiratory control and breath efficiency. Over time, many users notice they can sustain longer, steadier exhales with less effort.

What this feels like:
Your breath feels stronger. Regulation comes easier. Calm becomes more accessible.

7. Designed for Quiet, Private Use

Discreet by design
SHIFT is slim, lightweight, and silent — built to be used anywhere without drawing attention. A physical anchor you can rely on without explanation, screens, or guidance.

What this feels like:
Control, dignity, and privacy — exactly when you need them.

SHIFT is for people who know what helps — but can’t access it when their body is activated.

It’s for moments when stress shows up physically, not intellectually.

SHIFT fits into real life when:

• Crowds, noise, or public spaces make your body tense
• Work pressure keeps your system stuck in overdrive
• Meetings, presentations, or speaking up trigger nervous energy
• Your mind is ready, but your breath won’t slow
• You need calm without closing your eyes or explaining yourself
• You want to reset between moments — not escape your day
• Quitting smoking or vaping, use physical and visual cues to replace bad habits
  

SHIFT gives you a physical way to slow your breath, anchor your attention, and regain control — quietly, privately, and on your terms.

No apps. No counting. No instructions.

Just something real to hold when regulation matters.

Nervous System & Stress Health

• Reduced Stress
• Lower Anxiety
• Improved Regulation
• Increased Parasympathetic Activity
• Reduced Sympathetic Arousal
• Lower Physiological Stress
  

Cardiovascular Health

• Improved Heart Rate Variability
• Lower Blood Pressure
• Improved Cardiovascular Regulation
• Improved Baroreflex Sensitivity
• Stabilized Heart Rate
  

Mental & Emotional Health

• Improved Emotional Regulation
• Reduced Emotional Reactivity
• Improved Mood
• Reduced Mental Tension
• Improved Stress Resilience
  

Cognitive Health

• Improved Attention
• Improved Cognitive Control
• Improved Mental Clarity
• Reduced Cognitive Load
  

Sleep & Recovery Health

• Improved Sleep Quality
• Improved Sleep Readiness
• Reduced Sleep Latency
• Improved Recovery
  

Immune & Inflammatory Health

• Reduced Inflammatory Signaling
• Improved Neuroimmune Regulation
• Improved Immune Balance
  

Digestive & Gut Health

• Improved Digestive Regulation
• Improved Gut–Brain Communication
• Improved Gastrointestinal Function
  

Whole-Body Regulation

• Improved Autonomic Balance
• Improved Physiological Homeostasis
• Improved Systemic Regulation

Slow, controlled breathing can shift the nervous system toward the parasympathetic (“rest and regulate”) state and is commonly measured through changes in heart rate variability (HRV).

https://pmc.ncbi.nlm.nih.gov/articles/PMC5709795/https://pubmed.ncbi.nlm.nih.gov/35623448/

Slow breathing is associated with increased cardiac vagal activity and parasympathetic regulation, though it is different from medical vagus nerve stimulation devices used clinically.

https://pubmed.ncbi.nlm.nih.gov/35623448/https://www.mayoclinic.org/tests-procedures/vagus-nerve-stimulation/about/pac-20384565

Breathing interventions are associated with reduced perceived stress and anxiety in many studies, though effects vary depending on method, consistency, and individual differences.

https://www.mdpi.com/2076-3425/13/12/1612https://www.nature.com/articles/s41598-025-92017-5

Slow breathing can improve baroreflex sensitivity — a key mechanism in blood pressure regulation — and some studies show reductions in resting blood pressure over time.

https://www.ahajournals.org/doi/10.1161/01.hyp.0000179581.68566.7dhttps://www.sciencedirect.com/science/article/abs/pii/S0002914917306185

The vagus nerve plays a role in the “inflammatory reflex,” a neural pathway that can modulate inflammatory signaling, though translating this into everyday practices remains an active research area.

https://www.jci.org/articles/view/30555https://pubmed.ncbi.nlm.nih.gov/35300992/

The vagus nerve is a primary communication pathway between the brain and gut and supports the “rest and digest” state involved in gastrointestinal function.

https://pmc.ncbi.nlm.nih.gov/articles/PMC6671930/

Breathing practices engage neural pathways linked to emotional regulation and are associated with improved mood in many non-clinical studies, though results vary.

https://www.mdpi.com/2076-3425/13/12/1612

Slow-paced breathing has been associated with improved sleep quality and increased nocturnal parasympathetic activity in controlled studies.

https://pmc.ncbi.nlm.nih.gov/articles/PMC6406675/https://pubmed.ncbi.nlm.nih.gov/25234581/

No. Clinical vagus nerve stimulation is a regulated medical treatment used for conditions such as epilepsy and treatment-resistant depression, while breathwork is a behavioral practice associated with nervous system regulation.

https://www.mayoclinic.org/tests-procedures/vagus-nerve-stimulation/about/pac-20384565

HRV measures variation between heartbeats and is commonly used as a physiological marker associated with autonomic nervous system balance and cardiac vagal activity.

https://pubmed.ncbi.nlm.nih.gov/35623448/

Research protocols vary, but many studies use consistent daily practice over weeks to observe measurable physiological changes.

https://pmc.ncbi.nlm.nih.gov/articles/PMC5709795/