A bottle container of a pinch-grip type, which is a synthetic resin blow-molded product and which comprises: a body of a bottle container, and a grip comprising: a pair of right and left deep-recessed grip portions formed by concaving both side wall portions of the body of the bottle container toward each other, and a rear wall portion of the body disposed at a position rearward from the deep-recessed grip portions in a front-back direction, wherein each of the deep-recessed grip portions comprises: a most recessed wall which is deeply caved in, vertical side walls disposed in positions facing each other across the most recessed wall, and lateral walls disposed at upper and lower ends of the most recessed wall, so that a surrounding wall as a whole is formed by these vertical walls and lateral walls that border and surround the most recessed wall, characterized in that the rear wall portion has a semi-circular shape in its plane cross-sectional view, wherein the all vertical side walls have an angle of gradient (α) which is set at a range of 85-95 degrees relative to a transverse center line extending horizontally, i.e., in the front-back direction, and passing through a central axis of the bottle container, wherein the two most recessed walls face each other across the transverse center line, and that a narrowest portion disposed between both of the two most recessed walls of the deep-recessed grip portions has a width (Wd) more than 0 mm and not greater than an outer diameter (φ) of a neck base, as seen in a plane cross-sectional view of this portion. a body of a bottle container, and a grip comprising: a pair of right and left deep-recessed grip portions formed by concaving both side wall portions of the body of the bottle container toward each other, and a rear wall portion of the body disposed at a position rearward from the deep-recessed grip portions in a front-back direction, a pair of right and left deep-recessed grip portions formed by concaving both side wall portions of the body of the bottle container toward each other, and a rear wall portion of the body disposed at a position rearward from the deep-recessed grip portions in a front-back direction, wherein each of the deep-recessed grip portions comprises: a most recessed wall which is deeply caved in, vertical side walls disposed in positions facing each other across the most recessed wall, and lateral walls disposed at upper and lower ends of the most recessed wall, so that a surrounding wall as a whole is formed by these vertical walls and lateral walls that border and surround the most recessed wall, characterized in that a most recessed wall which is deeply caved in, vertical side walls disposed in positions facing each other across the most recessed wall, and lateral walls disposed at upper and lower ends of the most recessed wall, so that a surrounding wall as a whole is formed by these vertical walls and lateral walls that border and surround the most recessed wall, characterized in that the rear wall portion has a semi-circular shape in its plane cross-sectional view, wherein the all vertical side walls have an angle of gradient (α) which is set at a range of 85-95 degrees relative to a transverse center line extending horizontally, i.e., in the front-back direction, and passing through a central axis of the bottle container, wherein the two most recessed walls face each other across the transverse center line, and that a narrowest portion disposed between both of the two most recessed walls of the deep-recessed grip portions has a width (Wd) more than 0 mm and not greater than an outer diameter (φ) of a neck base, as seen in a plane cross-sectional view of this portion.