Choosing Masks for Children: Size, Fit and Product Labels
Choose a child's mask by fit, not age label alone. It should fully cover the nose, mouth and chin, sit snugly without gaps, remain comfortable enough to wear correctly and match the situation. Children under two should not wear masks, and some children may need supervision or assistance.
Reviewed and updated: July 2026
Key takeaways
- “Kids,” “small” and age ranges are starting points, not guarantees of fit.
- Medical masks and respirators have different designs and label markings.
- This public guidance is not a substitute for occupational or health-care respiratory requirements.
How can you check whether a child's mask fits?
| Check | Good sign | Reason to try another size or design |
|---|---|---|
| Coverage | Nose, mouth and chin remain covered | Mask slips below the nose or rides above the chin |
| Edges | Sits close to the cheeks and nose | Visible gaps or air leaking around edges |
| Security | Ties, bands or ear loops hold it without constant adjustment | Loops pull painfully or the mask moves while talking |
| Breathing and comfort | Child can breathe and communicate comfortably | Breathing difficulty, distress or inability to remove it safely |
| Condition | Clean, dry and undamaged | Dirty, damp, torn, crushed or misshapen |
What should Canadian buyers look for on the label?
For medical masks, the Public Health Agency of Canada advises looking for established standards such as ASTM F2100 or EN 14683 on the box. For respirators used by the public, markings depend on the type: examples include a NIOSH approval number on an N95 or the applicable marking for a CSA-certified CA-N95/CA-N99, KN95, KF94 or FFP2. A familiar shape alone does not prove a standard.
How do age and supervision affect mask use?
Children under two should not wear masks. Public Health Agency guidance says children aged two to five may be able to wear one with supervision if they can tolerate it and put it on and take it off. Consider the child's maturity, physical or cognitive ability and whether assistance is available.
Practical buying checklist
- Measure or compare the child's face rather than relying only on an age range.
- Choose the appropriate product type for the situation.
- Verify package standards and the exact product markings where applicable.
- Buy a small quantity first when testing a new size or shape.
- Check fit while the child talks and moves naturally.
- Replace disposable masks when dirty, damp or damaged; follow instructions for any reusable product.
Frequently asked questions
Does a community-use respirator need formal fit testing?
PHAC says formal fit testing is not required for community use. Occupational and health-care programs can have different requirements.
Can a face shield replace a mask?
PHAC advises against using a face shield instead of a mask for community masking.
Is the smallest adult mask always suitable for a child?
No. Facial shape and design vary. Check coverage, edge gaps, security and comfort on the individual wearer.
What if a child has trouble breathing?
Remove the mask. If breathing does not improve, seek medical attention promptly.
Browse available masks and respirators, read the mask fit, sizing and strap guide, or compare respirators and medical masks.
Sources and further reading
- Public Health Agency of Canada: Types of masks
- Public Health Agency of Canada: How to choose, use and care for masks
- Public Health Agency of Canada: Mask use for reducing respiratory-disease spread
This article provides general public purchasing information, not medical advice or occupational respiratory-protection guidance.