When the system starts, you will feel a pre-inflate cycle, during which the connected attachments are molded to your exact body shape. The session will start by compressing your feet, hands, or upper quad (depending on which attachment you are using). Similar to the kneading and stroking done during a massage, each segment of the attachment will first compress in a pulsing manner and then release. This will repeat for each segment of the attachment as the compression pattern works its way up your limb. Our systems include a control unit and attachments which go on the legs, arms, or hips. They use compressed air to massage your limbs, mobilize fluid, and speed recovery with our patented NormaTec Pulse Massage Pattern.