A seat assembly for a vehicle includes a seat back having a cushion surface forming a bolster along a lateral edge thereof, a recess formed in the bolster, and a retractable seatbelt. When in a stowed condition, the seatbelt extends along the bolster between a top and a bottom thereof, and a portion of the seatbelt passes over the recess to create a space between an edge of the seatbelt and the cushion surface. The recess is sized and located to enable a seat occupant to insert fingers into the space and easily grasp the seatbelt for deploying it. The recess may be a depression in the cushion surface, or may be formed by a first portion of the bolster having a first radius smaller than a second radius of a second, un-recessed portion of the bolster adjoining the first portion.