The device uses specialised attachments that slide onto the leg(s) like boots. These boots contain separate air chambers which fill up segmentally with air compressing the limb distally to proximally. Each segment of the attachment will first compress in a pulsing manner and then release. This will repeat for each section as the compression pattern works its way up your limb, effectively mimicking the muscle pump of the legs to move pain-causing fluid and metabolites out of the limb.