Restorative Yoga, props are used for support the body so that you can hold poses for longer, allowing you to open your body through passive stretching. The postures are usually adapted from supine or seated yoga poses with the addition of blocks, bolsters, and blankets to eliminate unnecessary straining. For instance, a seated forward bend (paschimottanasana) can be done with a bolster or several folded blankets on top of the legs so that your forward bend is fully supported with the entire torso resting on your props. Legs up the wall (viparita karani) is a classic restorative, with the wall used as a prop to support the legs. 

– from yoga.about.com

tensegrity yoga

A balance of discontinuous compression elements, which are connected by continuous tension forces, which allow any system to exist in balance...

vijnana yoga

A deep understanding or knowing that cannot come about merely through outer knowledge...

restorative yoga

A passive, gentle style of yoga using props to support the body for longer holds. It is a very relaxing form of yoga that is a beautiful compliment to the more active practices...

back mitra yoga

The BackMitra is an effective tool used during practice to help improve posture and strengthen your back...