I. Why does this question arise?
1. Many new parents have this question
If my baby is wearing a swimsuit, do I still need to wear a diaper underneath?
Should I use regular diapers or special swimming diapers?
2. Infants cannot control their urination and defecation
From newborns to preschool age, almost all infants cannot consciously control their urination and defecation. Besides guidance and training, real-time protective measures are needed, such as wearing diapers.
3. Hygiene requirements of public environments
Publicly used environments such as swimming pools and beaches have hygiene requirements, especially swimming pools where many people come into contact with water.

II. Does my baby need to wear a diaper under their swimsuit?
Yes, babies must wear swimming diapers under their swimsuits.
1. Why?
- Regular disposable diapers cannot replace swimming diapers.
- Swimming diapers are not leak-proof; they only prevent solid waste from leaking out and contaminating the pool environment.
- Major public swimming pools have clear regulations on this.
III. What is the difference between regular diapers and swimming diapers?
1. Regular Diapers
Regular diapers refer to the absorbent disposable diapers that babies use daily. However, this absorbency is a major drawback for swimming.
- Regular diapers quickly absorb water and swell.
- Increased weight after swelling can restrict a baby's movement.
- Once saturated, excrement will begin to leak out, contaminating the water.
- This poses a significant threat to public health and safety.
2. Swimming Diapers
- Thin and soft, with lower absorbency, they do not add weight.
- They prevent leakage of solid waste.
- They are reusable.
- They fit the body better, reducing resistance during water movement.

IV. Diaper Recommendations for Babies of Different Ages
1. Under 3 Years Old
Newborns and infants under 3 years old are advised to wear swimming diapers under their swimsuits when swimming. The younger the baby, the more necessary they are.
One-piece baby swimsuits with sun protection: Choose styles that are easy to put on and take off for convenient diaper changes, such as button swimsuits or diagonal zipper swimsuits.

2. Children aged 3-12
Children in this age group can choose according to their individual needs. Children who can use the toilet independently do not need swimming diapers.
One-piece swimsuits are not limited; two-piece swimsuits are better, such as girl rash guard sets.

V. Precautions for swimming diapers
1. Understanding swimming diapers
Swimming diapers do not prevent urine from spreading; they only prevent accidental leakage of solid waste in the water. Wearing a diaper does not eliminate all worries.
2. Why are they still necessary?
- Public swimming pools have strict hygiene standards.
- To prevent sudden bowel movements by the baby from contaminating the water and breeding bacteria.
3. How to Wear and Change Swimming Diapers
- Ensure the swim diaper and swimsuit are clean before entering the water.
- Let your baby urinate or defecate before entering the water.
- Take your baby out to the toilet regularly.
- Change the swim diaper immediately after swimming, wash the baby's body, and change into clean clothes.
- The swim diaper must be washed thoroughly after each use.

VI. Parent Q&A
1. If my baby has just had their diaper changed, can they swim without a diaper?
No, this is prohibited in public swimming pools.
2. Can I wear a regular diaper under my swimsuit?
No, it will pollute the pool environment.
3. Do babies need swim diapers at the beach?
It is recommended, especially in crowded areas.
