TYR children's 1.8mm thick fleece long-sleeved warm one-piece swimsuit is your baby's best partner for water activities! Made from high-quality fleece material, it provides superior warmth and keeps you comfortable even in cooler water temperatures. The thickness of 1.8mm does not affect the flexibility of activities while keeping warm, allowing children to enjoy playing in the water. The one-piece design and front zipper make it easy and quick to put on and take off, making it ideal for swimming lessons, beach vacations, water parks and other occasions. Bright contrasting color design makes your child more eye-catching and cute in the crowd. TYR is a classic brand with guaranteed quality, giving children the most secure protection. Please choose the appropriate size according to the size chart, so that your child can have a happy and safe summer!

*Due to hygiene reasons, this product cannot be returned or exchanged. If you are not sure about the size, it is recommended to check it at the physical store.
The "recommended height" indicated on this website is for general reference only. Due to individual differences in body shape, growth rate, and personal preferences, the actual fit should be determined through trying on or by considering multiple measurements such as bust, waist, and shoulder width before making a final size selection.
Size Chart

| Size | Recommended age | 建議身高 (cm) | 建議體重 (kg) | 胸圍 (cm) | 腰圍 (cm) | Length (cm) |
|---|---|---|---|---|---|---|
| 0 | 6-18 months | 80-90 | 8.0-13.0 | 48-52 | 43-47 | 36 |
| 2 | 1.5-3 years | 90-100 | 9.0-15.0 | 48-52 | 42-46 | 37.5 |
| 4 | 3-5 years | 100-110 | 14.0 – 18.0 | 52-56 | 46-50 | 39 |
| 6 | 5-7 years | 110-120 | 17.5 – 22.0 | 58-62 | 56-60 | 41.5 |
| 8 | 7-9 years old | 120-130 | 21.0 – 27.5 | 62-66 | 60-64 | 43 |
| 10 | 9-10 歲 | 130-135 | 27.0 – 38.0 | 66-70 | 64-68 | 44.5 |
| 12 | 10-12歲 | 135-140 | 31.0 – 43.0 | 70-74 | 68-72 | 46 |
| 14 | 12-14歲 | 140-145 | 35.0 – 49.0 | 74-78 | 72-76 | 47.5 |
| 16 | 14-16歲 | 145-150 | 46.0 – 53.0 | 78-82 | 76-80 | 49 |
Children’s Thermal Swimsuit Selection Guide
Q: Children are more sensitive to temperature. Do they have to wear thermal swimsuits when swimming in winter?
A: Strongly recommended. Children have a relatively larger body surface area and lose body temperature faster than adults. WearingKid's Wetsuits can effectively prevent children from feeling cold in the water and becoming resistant, allowing them to focus more on learning swimming skills and reducing the risk of colds.
Q: Are children's thermal swimsuits easy to put on and take off? Will it be too tight for your child?
A: The professional brands we choose strike a balance between warmth and comfort. Although the thermal insulation material is thick, the design takes into account children's activity needs and provides moderate elasticity. It is recommended to choose a size that fits just right, which can keep heat insulated without restricting the child's body movements.
Q: Can a thermal swimsuit replace a wetsuit?
A: Lightweight thermal swimsuits are suitable for use in swimming pools or mild waters; if you want to carry out deep diving or ultra-low temperature diving, you need a professional wetsuit (Wetsuit). Dolphin eShop's thermal range is specifically designed for swimming training, providing optimal flexibility with just the right amount of insulation.




























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