Hengyuanxiang Children's Autumn Long Johns, Boys' Pure Cotton Thin Single-Piece Thermal Underwear, Mid to Big Kids' All-Cotton Base Layer Pants, Cotton Thermal Underpants

Meets national infant clothing Class A standards

free from formaldehyde, aromatic amines, heavy metals, and other harmful substances

Passed formaldehyde, colorfastness, pH value, aromatic amine, and heavy metal testing

3D tailored cut for freedom of movement and zero restriction

Suitable for various body shapes (slim to plump)

Inner lining at crotch to avoid exposure and embarrassment

Wash at low temperature (max 40°C)

Do not bleach

Hang dry

Iron at low temperature

Multiple vibrant colors to choose from, ensuring a favorite for every child

Fine craftsmanship with precise stitching and detailed side openings

Durable elastic waistband and cuffs maintain shape and comfort

Soft, high-elasticity fabric that does not pill

Every detail embodies warmth and commitment

Carefully selected 100% combed cotton material for superior comfort

Designed to provide safe, comfortable, and warm wear for children

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