Woof Wear Smart Knee Boot Medium Large Black Horse Size:Medium Large ensuring the precision of the ensuring the precision of the spurs adjustmentElastollan inner overmolding for a powerful grip on the bootAngled and profiled spur strap apertures for ergonomic positioning of the strap over the bridge of the foot Myler bits are made from a polished sweet iron which naturally oxidises and rusts (this will result in bit discolouration which is completely harmless to the horse) giving freedom of movement while providing protection when needed Protect your horse's knees while riding on hard surfaces with the Woof Wear Smart Knee Boot