Uttanasana is a standing forward bend. In this version, the upper shoulders are supported on the backs of two chairs so the head hangs.
Effort remains in the legs which I have elevated on two blocks due to my height. Optimally, you want your inner shoulder at the base of the neck (not the collar bones) to rest on the chairs.
The benefits of this pose will be realized if you are able to stay with ease for 5-10 minutes.