Betis Children's Underwear 3-4 Years Old Boys' Modal Summer Boxer Shorts Silk Soft No Pinch

Elastic waistband with contrasting thin edges for style and comfort

No chemical additives, zero chemical auxiliary agents

Skin-friendly, no irritation with seamless tag design

Suitable for sensitive skin and active children

| Size | Waist/2 | Hip/2 | Side Length | Recommended Weight (jin) | Age Range | Height Range (cm) |

|-------|---------|--------|-------------|--------------------------|-----------|-------------------|

| 90 | 20 | 29 | 17 | 15-25 | 2-3 years | 85-95 |

| 100 | 21.5 | 30.5 | 17.5 | 20-30 | 3-4 years | 95-105 |

| 110 | 23 | 32 | 18 | 30-40 | 5-6 years | 105-115 |

| 120 | 25 | 34 | 19 | 40-50 | 7-8 years | 115-125 |

| 130 | 26.5 | 35.5 | 20 | 50-60 | 8-9 years | 125-135 |

| 140 | 28 | 37 | 21 | 60-70 | 10-11 years| 135-145 |

| 150 | 29.5 | 38.5 | 22 | 70-90 | 12-13 years| 145-155 |

| 160 | 31 | 40 | 23 | 90-110 | 14-17 years| 155-165 |

Simple Summer

Sailing Adventure

Shark Adventure

Water temperature below 40°C

Do not bleach

Recommended natural air drying; do not tumble dry

Hand wash or gentle machine wash

Do not dry clean

Measurements are manual and may have slight deviations; please refer to actual product

Over 1,089,381 units sold from 2022 to December 2025 (data from Jushuitan)

Developed with guidance from Stanford Biocognitive Research Institute, USA

Designed specifically for Asian children with dynamic anti-chafing fit

Certified antibacterial performance meets T/GDBX056-2022 standard

Softness and breathability surpass ordinary modal fabrics

Product is designed to redefine infant and child lifestyle with technology and eco-friendly materials