Adjustable Resistance: Our chest expander has five springs with a 65KG force. The resistance can be adjusted by removing springs, making it suitable for both beginners and advanced users. Userfriendly Design: Easy to install and operate. Ideal for home workouts without complicated equipment or setup. Professional Manufacturing: Manufactured to professional standards, offering stable performance and reliability for longterm use. Versatile Workouts: Allows effective training of the abdomen, arms, and chest in standing or sitting positions, targeting multiple muscle groups. Usage scenarios Athome upperbody routine: Set up in a home environment and perform chest expansions and arm exercises in standing or seated positions for chest, arm, and core engagement. Progressive resistance training: Start with fewer springs and gradually add springs as strength improves. Springs are removable for load adjustment. Fullbody variety in limited space: Use different positions and exercises to target multiple muscle groups (abdomen, arms, chest) in a compact setup.