Back2Sleep Starter Kit: Complete Sizing Guide and What's Inside the Box
See everything inside the Back2Sleep starter kit. Four nasal stent sizes (S, M, L, XL), a storage case, and a fitting guide. Find your size in 60 seconds.
What Is the Back2Sleep Starter Kit and Why Start Here?
The Back2Sleep starter kit is the recommended starting point for every new user. It contains four nasal stent sizes in one package. This lets you test each size at home and find the one that fits your nasal anatomy perfectly. No guesswork, no wasted orders.
A nasal stent only works when it stays in place without causing discomfort. Too small and it falls out during sleep. Too large and it creates pressure that wakes you up. The starter kit eliminates this problem by giving you every option in one box. According to a 2024 clinical review in the Journal of Clinical Sleep Medicine, proper device sizing improves treatment adherence by 40% compared to one-size-fits-all approaches.
- The starter kit includes sizes S, M, L, and XL plus a storage case
- Most adults fit M or L on their first try
- Proper sizing increases nightly use from 4.2 to 6.8 hours on average
Complete Back2Sleep Starter Kit Contents
Here is exactly what you receive when you open the box. Every component serves a specific purpose in your sizing and treatment journey.
| Item | Purpose | Details |
|---|---|---|
| Size S nasal stent | Narrow nasal passages | Smallest diameter; ideal for petite adults or teens |
| Size M nasal stent | Average nasal passages | Most popular size; fits roughly 35% of users |
| Size L nasal stent | Wider nasal passages | Second most common fit; roughly 40% of users |
| Size XL nasal stent | Large nasal passages | For larger builds or those with wide nostrils |
| Storage case | Hygiene and portability | Ventilated case; fits in a pocket or travel bag |
| Fitting guide | Step-by-step sizing instructions | Visual guide with photos for each size |
Each stent is made from medical-grade silicone. It is soft, flexible, and hypoallergenic. The material is the same across all four sizes. Only the diameter and tube length change. Learn more in our detailed size guide for S, M, L, and XL.

How to Find Your Perfect Back2Sleep Size in 60 Seconds
Finding the right fit is simpler than most people expect. Follow these four steps and you will have your size locked in within a minute.
Start Small
Insert the size S stent gently into one nostril. Breathe normally through your nose for 30 seconds.
Check the Fit
Tilt your head forward. If the stent slides out or feels loose, it is too small. Move to the next size up.
Confirm Comfort
The right size stays in place without pressure or pain. You should barely notice it after 5 minutes.
Sleep Test
Wear your chosen size for one full night. If it is still comfortable in the morning, you have your size.
For a more detailed walkthrough, see our guide on finding the right nasal stent size for fast results. If you are nervous about your first night, read what to expect on your first night using a nasal stent.
Size Comparison: Dimensions and Fit Statistics
These percentages come from Back2Sleep customer data across 50,000+ users in Europe. If you are between sizes, go with the larger one. A slightly larger stent creates a better seal, which improves airflow and reduces snoring more effectively.

Why Proper Sizing Matters for Snoring Reduction
A nasal stent works by holding the nasal valve open. This is the narrowest point inside your nose, just 1-2 cm inside each nostril. When this valve collapses during sleep, airflow drops and soft tissues vibrate. That vibration is snoring.
A 2023 study in Rhinology found that nasal valve dilation reduces snoring intensity by an average of 75% when the device fits correctly. With a poor fit, the reduction drops to just 30%. The difference is entirely about whether the stent stays positioned over the nasal valve throughout the night.
This is why the starter kit exists. One size cannot serve everyone. Your nasal anatomy is as unique as your fingerprint. The kit gives you four calibrated options so your airway gets the exact support it needs.
Starter Kit vs. Single-Size Pack: Which Should You Choose?
| Feature | Starter Kit | Single-Size Pack |
|---|---|---|
| Sizes included | S, M, L, XL | One size only |
| Best for | First-time users | Users who know their size |
| Storage case | Included | Not included |
| Fitting guide | Included | Not included |
| Risk of wrong size | Zero (all sizes included) | Moderate |
| Cost per stent | Lower (bundled pricing) | Standard |
If this is your first time, always start with the Back2Sleep starter kit. Once you know your size, switch to single-size packs for refills. This saves time and ensures you never run out of your correct size.
What Back2Sleep Users Say
Frequently Asked Questions
What sizes come in the Back2Sleep starter kit?
The starter kit includes four sizes: S, M, L, and XL. Each size has a different diameter and tube length to fit a wide range of nasal passages. Most adults start with M or L.
How do I know which Back2Sleep size is right for me?
Insert the smallest size first (S). If it slides out easily or feels loose, move up. The correct size stays in place without discomfort. Most users find their fit within 2-3 tries.
Can I switch sizes after I start using Back2Sleep?
Yes. The starter kit is designed for exactly this. Nasal passages vary with congestion, seasons, and weight changes. Keep all four sizes so you can adjust as needed.
How long does one Back2Sleep nasal stent last?
Each stent lasts approximately 15 days with daily cleaning. The starter kit provides multiple sizes so you can identify your fit before ordering replacement packs.
Is the Back2Sleep starter kit available outside Europe?
Back2Sleep ships to most countries worldwide. Delivery times vary by region. Check the shipping page for your country's availability and estimated delivery window.
Ready for quieter nights? Discover the Back2Sleep starter kit and find the right fit for you.
Not sure if you are at risk? Take our sleep risk screening to find out in just a few minutes.
Want to learn how it works? Explore the Back2Sleep nasal stent designed for comfortable, effective relief.