united ortho short air cam walker fracture boot, fits left or right, small, black united ortho the united ortho air short cam walking boot provides maximum stability and support following injury or post-operative procedures. the air short cam walking boot can be used for acute ankle sprains, soft tissue injuries, stable lower leg, foot and ankle fractures and post-operative use. plastic molded uprights with steel reinforcement provides increased durability. shock-absorbing insole reduces impact of heel strike when walking. rocker sole helps promote a natural gait to allow continuation of daily activities. recommended up to 300 pounds. united ortho has provided medical professionals and consumers with affordable, high-quality products for more than 40 years. we design, manufacture, and distribute a broad range of bracing solutions, and commitment to customer satisfaction is ingrained in our culture. united ortho guarantees all products to be free from defects in materials and workmanship for a period of six months from date of purchase. for warranty claims or questions please contact 1-800-227-8748.