Herm Sprenger Original System 4-F Stirrups offer all the benefits of System 4-F technology, but in the original style. Special treads adapt to your foot, ensuring consistent contact with stirrup. Manufactured according to strict standards and using only the highest quality materials, these irons are designed to significantly reduce strain on knee and ankle joints. They pivot simultaneously in four directions to allow for greater comfort and improved performance. This increased flexibility helps alleviate tension and pain in the hips, knees and ankles by softening the impact on joints, cartilage and ligaments. Note: due to rubber covering, stirrup is 1/4" smaller than the size given.
Made in Germany.
How to Size Stirrup Irons
Stirrup iron sizing is measured in inches inside the branches along the top of the footbed. Correctly sized irons are critical for good riding; an iron should be 1" wider than the width of your boot at the ball of the foot. With your foot in the iron, you should have 1/2" inch of space on each side for safe clearance.
If you change your boot style to a thicker style, such as an insulated winter riding boot, you may need to get larger sized irons for the season.
While you don't want your boot to fit too snugly into your iron, you also don't want your iron to be too wide. This could allow your foot could slip "home" more easily, and you may struggle to keep your irons in the correct position on the balls of your feet.
The most common size stirrup iron for adults is 4 3/4". Sizing for children varies greatly by age and foot size; irons are available starting a 4".