**Product Specifications:**
**Brand:** LangSha
**Product Name:** Comfortable Wide Mouth Mesh Breathable Men's Socks
**Material:** 100% cotton (excluding elastic fibers)
**Thickness Index:** Ultra-thin
**Softness Index:** Soft
**Elasticity Index:** Good
**Color:** Black, Dark Gray, Light Gray
**Size:** 26-28cm (suitable for shoe sizes 39-44)
**Breathability Index:** Good
**Suitable for:** Home leisure, fashion simplicity, people with foot odor and sweat
**Certifications:** Tested and certified by TianFang Standard Testing Certification Co., Ltd. and National Knitwear Product Quality Supervision and Inspection Center
**Quality Assurance:** LangSha ensures high-quality standards for healthy and comfortable wear
**Testing Standards:** Compliant with various national and international standards for color fastness, fiber content, pH value, formaldehyde content, odor, etc.
**Sock Details:**
- Comfortable socks mouth design with high elastic rubber band for a snug yet comfortable fit
- 360-degree three-dimensional design at the heel to reduce foot pressure and conform to ergonomics
- Flat sock head design for durability and comfort, providing intimate care for your toes
**Note:** The provided information has been summarized and organized into product specifications for LangSha's 100% cotton wide mouth mesh breathable men's socks.