A portable seating device which permits the user to support the back region of the body with the legs of the user when the user is seated with the buttocks on the ground or floor and legs bent at the knees. The device includes a singular strap which fits about the user's body and across the shins of the legs that is selectively adjustable to facilitate adaptation to different body sizes. The device further includes a padded back support cushion which lays against the upper region of the user's back when worn.