The Bio-Pulse jacket - convenient for travel and shows; has 2 magnetic coils on the hip/haunches, provides therapy for the hip, pelvis and spine. A rechargeable, computer controlled unit delivers 30 minutes of therapy, and shuts off automatically. Your dog can sit down, walk, or lie down while the system is on. Comfortable, washable mesh fabric. System weighs only 4 pounds. Jacket measures from base of neck to base of tail and is 23". Fits dogs up to 60 lbs. Thanks to Sascha for modeling!