Material: high-elastic breathable functional knitted fabrics， made of soft silicone gaskets， enhance the stability of the knee， inside and outside the additional bendable metal spring， to strengthen the knee support， the auxiliary ring worn easily worn
Size: S (35-44cm)， M (37-46cm)， L (39-48cm)， XL (40-50cm)
Reference Size:
S code， for the leg-circumference 35-44cm， fit around the lower leg circumference 28-36cm，
M code， for the leg-circumference 37-46cm， fit around the lower leg circumference 30-38cm，
L code， for the leg-circumference 39-48cm， fit around the lower leg circumference 32-40cm，
XL code， for the leg-circumference 40-50cm， fit around the lower leg circumference 34-42cm，