The YONEX Power Cushion Eclipsion Z2 Badminton Shoes have a semi-one piece sole and Radial Blade Sole for maximum stability and grip, promoting rapid footwork. The ECLIPSION series is focused on stability to handle even the most advanced or complex footwork, providing the athlete with confidence in every step and every jump. As badminton play has become increasingly fast-paced in recent years, shoes must have the stability to react instantly and propel quickly. About YONEX: YONEX manufactures badminton racquets and other sports equipment. The company has been in business since 1968 and is known for its superior quality and attention to detail. Are these indoor or outdoor shoes? These YONEX shoes can be used only for indoors.