It features: (1) adjustable assured compression levels (20-30, 30-40, or 40-50 mmHg); (2) cool, light-weight, Breathe-O-Prene® material; (3) the patented Juxta-Lock™ Band System for easy application; (4) two odor eliminating compressive undersocks; (5) a BPS measurement card for accurate compression; (6) 6 month warranty; (7) limited linear stretch material that hugs the limb. It is machine washable