MiiOW Kids Acrylic Thermal Underwear Set Thickened Autumn Winter Pajamas for Girls

Inner fleece maintains body surface temperature; outer layer blocks cold air intrusion for layered defense

Soft, elastic, and thick yet lightweight fabric with excellent moisture absorption

Double-sided fleece for enhanced warmth and softness

Anti-pilling, instant softness, and consistent heat retention

High elasticity for comfortable movement and no burden during activities

Heat-sensitive color change feature indicating body temperature increase (color variation normal due to production batches)

Mid-high collar design to keep neck warm, simple and easy to match

Elastic cuffs and reinforced hems for durability

Elastic waistband for a snug fit, collar maintains shape without deformation

Tested and certified for safety and heating performance

Heat-up performance tested under controlled humidity and temperature conditions

Due to production batch differences, the heat-induced color change may vary and is considered normal.