The pressure from the compression socks put on your legs helps blood circulation and fluid circulation better. 
The Heart is a "pump" pumping oxygen rich blood to the whole body via the arteries. The veins on the other hand bring the blood back to the heart & lungs to rejuvenate with fresh oxygen. The muscles in the legs play an important role in helping the blood & fluids flowing back to the heart however when the muscles are weaker or not being utilized constantly there are major implications of this "non-activity" or "limited activity". The blood / fluids begins to pool in the lower extremity.  
Therapeutic Compression are speciall socks made for: 
- Soothing & Comforting
- Healing
- Improving Performance (especially sports)
- Variety of colors and designs
Recommended for : 
- Long Flights
- Longer periods of Sitting / standing 
- Sports
Prophilactically Recommended for following professions: 
- Nurses
- Doctors 
- Healthcare workers 
- Flight attendants
- Pilots
- World travelers
- Athelets & Sportsman
- Pregnant women
- Workers in various industries 
Therapeutically Recommended for following diagnoses / symptoms:
- Lower extremity swelling
- Lymphedema
- People with circulatory problems especially in the lower legs
- Pregnancy
- People at risk for DVT, Varicose Veins or Diabetes
- Immobile folks or people with diminished movements
More importantly it might prevent stroke / heart attacks(*). 
FEEL GOOD & MAKE A FASHION STATEMENT! 
 (*) Please consult your doctors regarding your specific condition!