**Product Specifications:**

Brand: LangSha

Product: Men's Casual Socks

Material: 100% Cotton

Length: Mid-calf

Features: COFO, 5A Grade Antibacterial

Style: Casual Business

Quantity: 6 pairs of casual men's socks

Comfortable fit with mid-calf length

Elastic and non-binding for a snug fit

Certified by multiple authorities including TianFang Standard Testing and Certification Co., Ltd., National Knitwear Product Quality Supervision and Inspection Center

Testing Standards: HA, HA, 170011263663, 170011260277, HaG-HRA, CNAS, TESTNG, CNAS L0008, CKTC-WT19111143

Color: Black

Fiber Content: 100% Cotton (excluding elastic fibers)

Moisture Absorption Level: ≥3 (Deep 2-3)

Color Fastness to Perspiration: 4-5

Formaldehyde Content: ≤75 mg/kg (not detected, below detection limit of 20 mg/kg)

pH Value: 6.1 (within range of 4.0-8.5)

Decomposable Carcinogenic Aromatic Amine Dyes: Not detected (below detection limit of 5 mg/kg)

Odor: None

Waistband with elasticity for better fit and breathability

Smooth and breathable cotton fabric for a comfortable feel

Mid-calf length with secure heel for comfortable wear and durability

Versatile and breathable, suitable for various outfits

Soft and comfortable 100% cotton material for a gentle and snug fit

(Note: This is a summary of the product specifications provided in the text.)