This study will use magnetic resonance imaging (MRI) to evaluate changes in gluteal muscle following the treatment with HIFEM stimulation for aesthetic improvement of buttocks.

Inclusion Criteria:

• Age ≥ 21 years
• Voluntarily signed informed consent form
• BMI ≤ 30 kg/m2
• Women of child-bearing potential are required to use birth control measures during the whole duration of the study
• Subjects willing and able to abstain from partaking in any treatments other than the study procedure to promote body contouring during study participation
• Subjects willing and able to maintain his/her regular (pre-procedure) diet and exercise regimen without effecting significant change in either direction during study participation

Exclusion Criteria:

• Cardiac pacemakers
• Implanted defibrillators, implanted neurostimulators
• Electronic implants
• Pulmonary insufficiency
• Metal implants
• Drug pumps
• Malignant tumor
• Fever
• Pregnancy
• Breastfeeding
• Following recent surgical procedures when muscle contraction may disrupt the healing process
• Application over areas of the skin which lack normal sensation
• Scars, open lesions and wounds at the treatment area
• Unrepaired abdominal hernia