Observational Study: No intervention

1. Subject assessment of comfort and compliance will be filled out by subjects using a 6-points Usability Survey, as follows:

• Overall Size of the device - 0 - Being the largest device 5 -Being the smallest.
• Secrecy - If patient's are uneasy of people knowing they are wearing a medical device. 0 - Not able to hide 5 - Discrete
• Adaptable to size - Can devices be used on all size patients, extreme scales. 0- Not adjustable 5- Can fit all sizes
• Device Material - Is the material comfortable to wear. 0 - Uncomfortable 5 - Comfortable
• Active Wear - Can patient's wear the device while exercising. 0- Not at all 5 - Can exercise without interference.

2. Investigator assessment of device usability will be filled out by PI using a 4-points Likert scale, as follows: 3 = Extremely useful in post op care; 2 = Useful in post op care; 1 = Somewhat useful in post op care; 0 = Useless in post op care.

3. Investigator assessment of satisfaction will be filled out by PI using a 5-points Likert scale, as follows:

+2 = Very satisfied; +1 = Satisfied; 0 = Indifferent; -1 = Disappointed; -2 = Extremely disappointed.