A mid-thigh Faja with back coverage and adjustable straps is a type of shapewear or compression garment that provides support and shaping to the midsection and thighs while also offering coverage and control to the back area. 

Fajas are often used to provide a slimming effect and enhance the appearance of the body by smoothing out curves and creating a more streamlined silhouette. They are commonly worn under clothing and can help provide a more contoured and defined shape.

The mid-thigh length indicates that the Faja extends down to the mid-thigh area, providing shaping and compression to the thighs as well as the midsection. This can help smooth out any bulges or unevenness in the thigh area and create a more streamlined look.

The back coverage refers to the design of the Faja that includes support and control for the back area. This can help improve posture and provide additional shaping and support to the back, which can be beneficial for individuals who want to address posture issues or desire a more sculpted appearance in the back area.

Adjustable straps allow for customization and fine-tuning of the fit. They can help ensure a snug and comfortable fit and allow for adjustments to accommodate different body shapes and sizes. The adjustable straps can also provide additional support to the bust area, depending on the specific design of the Faja.

It's important to note that while Fajas can provide temporary shaping and support, they are not a substitute for long-term lifestyle changes, such as regular exercise and a healthy diet if you are looking to achieve sustainable changes in your body shape. Additionally, it's advisable to consult with a healthcare professional or follow the manufacturer's guidelines when choosing and using compression garments to ensure proper fit and usage.