1. Compression Level – Compression socks come in different levels of compression, which are measured in mmHg (millimeters of mercury). The level of compression needed will depend on your needs, and it's best to consult with your physician if you're unsure. For instance, individuals with mild leg discomfort may require lower compression levels than those with more severe medical conditions.

2. Size and Fit – Compression socks are designed to fit snugly around your feet and legs. Proper sizing and fit are crucial for maximum effectiveness. Make sure you measure your legs accurately, especially if you have larger calf muscles. Ill-fitting compression socks can cause discomfort, bunching, or rolling.

3. Material – Compression socks come in different materials, including nylon, spandex, and other fabrics. If you have sensitive skin, look for alternatives that won't irritate your skin. Also, consider the breathability and moisture-wicking properties of the material to ensure comfort during prolonged use.

4. Purpose – Compression socks have different purposes, from athletic performance to medical conditions. For instance, if you're an athlete, you may want to consider compression socks designed for performance, such as those with extra cushioning, seamless design, or reinforced arch support. Conversely, if you're dealing with medical conditions like varicose veins or lymphedema, compression socks designed for medical use may be more appropriate.

In conclusion, choosing the right compression socks is crucial for maximizing performance and recovery benefits. Consult with your physician to determine the right compression level and purpose, and consider the size, fit, and material to ensure comfort during prolonged use.