The NormaTec PULSE Recovery Systems are dynamic compression devices designed for recovery and rehab. The NormaTec Systems use compressed air to massage your limbs, mobilize fluid, and speed recovery. 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. The compression sleeves can go either on your legs, arms or hips.