**Product Specifications:**

**Brand:** ALPINT MOUNTAIN

**Product Name:** RUNNER 4.0 Series

**Materials:** REPREVE® recycled polyester fiber

**Technology:**

- Smart temperature control technology

- Smart ventilation technology

- Moisture management technology

- Asymmetrical toe design

- Swiss technology silver ion treatment

**Features:**

- High-wear area reinforcement

- Targeted ventilation channels

- Arch compression protection

- Comfortable seamless toe

- Waterproof blister zone

**Usage Scenarios:**

- Long-distance races

- Urban commuting

- Trail running

- Running training

- Fitness activities

**Product Information:**

- Sizes: Men's 22-27CM, Women's 20-24CM

- Colors: Men's mid-calf socks in black and white, Women's mid-calf socks in pink, Men's ankle socks

**Product Display:**

- RUNNER 4.0 Mid-Calf Socks for Men in white and black, Women in pink

ALPINT MOUNTAIN and REPREVE collaborate to create sustainable and eco-friendly socks that incorporate REPREVE® recycled polyester fiber, offering moisture-wicking, temperature control, and ventilation features. The socks are designed for various activities such as long-distance running, trail running, and fitness training, providing comfort and performance for outdoor enthusiasts.