COCO SMART Youth Thermal Underwear Set, German Velvet Heat Retaining, Thickened Fleece, Boys' Autumn Long Johns for High School Students, Cold Resistant

Fabric 1

63.7% Acrylic (De Rong), 9% Spandex, 27.3% Regenerated Cellulose Fiber

High content of heat-retaining acrylic fiber (De Rong) with double-sided brushed finish

Moisture absorption and heat retention for enhanced warmth

Camellia oil infusion for skin moisturizing and protection

7A grade antibacterial treatment effective after 150 washes

Complies with GB18401-2010 and GB/T8878-2023 safety standards for infant and children textile products

Heat generation and retention for winter warmth (upgraded 3.0 technology)

Antibacterial and skin-soothing with plant essential oils and camellia extract

Suitable for sensitive skin and children (Class A baby-grade fabric)

Durable, breathable, and moisture-wicking

Milk protein and silk protein enriched for skin nourishment

Tested and certified for safety and antibacterial efficacy

Sky Blue, Maple Brown, Cloud Gray, Star River Gray, Mint Mambo, Cloud Platinum Gray

Wash separately for dark colors, avoid bleach

Recommended washing temperature below 30°C

Use laundry bag for machine wash or gentle hand wash

Avoid high-temperature drying to prevent deformation

Natural drying recommended for high cotton content garments

Size recommendations are for reference; actual fit may vary.

Designed for growing children with focus on warmth, comfort, and skin protection

Suitable for daily wear in autumn and winter, indoor and outdoor activities

High-quality fabric with premium cost and superior performance compared to polyester alternatives

Certified antibacterial and safety reports available (T/SZTIA001-2023, GB/T17592-2011)

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