Full-body upper-body exercise: this chest expander with springs and wall pulley exercise bands provides a versatile training solution for working arms, chest and other muscle groups. The adjustable resistance lets you progress as you get stronger. Lightweight and convenient: plastic handle design is lightweight and easy to grip, improving control and comfort during movements. It serves as a practical chest muscle strengthener and chest trainer for regular use. Compatibility for kids and adults: suitable for both children and adults, making it a flexible tool for family fitness and personal training within a wall pulley training system. Versatile and removable: removable spring expander offers flexible resistance levels and can be used with or without springs for different exercises and intensity. Compact and easy to store at home. Use scenarios - At home workouts: perform upper body routines to train arms, chest and shoulders in short sessions without large equipment. - Family fitness: suitable for different ages and fitness levels, allowing shared use and progressive resistance as needed. - Travel or office training: lightweight and portable option for quick strength and stretch routines in small spaces.