SIZES AVAILABLE IN 4 SIZES 4 INCH , 4.50 INCH, 4.75 INCH , 5 INCH 4 INCH SIZE FOR KIDS/CHILDREN RAINBOW MULTI COLOR PROVIDES OPTIMUM COMFORT FOR THE LEG POSITION. MADE OF HIGH QUALITY STAINLESS STEEL. PROVIDES OPTIMUM COMFORT FOR THE LEG POSITION. SAFE, SECURE, DURABLE AND NON-RUSTY. RUBBER TREADS. IT KEEPS THE FOOT AND LOWER LEG STABLE. SIZES AVAILABLE IN 4"/4.50"/4.75"/5" HIGH QUALITY STAINLESS STEEL. GOOD QUALITY FLEXI LINKS MADE OF STEEL NOT IRON SO MORE DURABLE