These are Great for for rebuilding muscles in your legs and knees. also can work with your arms and wrists .The Foldable Compact Wrist Arm Leg Strengtheners Pedal Exerciser by Vaunn is a versatile fitness equipment designed for sports enthusiasts. This portable and easy-to-use pedal exerciser is ideal for individuals looking to strengthen their wrists, arms, and legs. With a sleek black design and a compact form factor, it is perfect for both men and women who are looking to enhance their fitness levels. The Vaunn brand ensures quality and reliability, making this product a great addition to any home gym or workout routine. shipping to Alaska, Hawaii and Puerto Rico are at a additional cost