A contoured container such as a training cup for a toddler having a pinched-waist shape includes printing on the outer surface in a highly contoured portion. Before the manufacturing steps wherein a preform is expanded to the desired pinched-waist shape, it is printed using expandable or rubberized ink. This intermediate product of manufacture is then stretch blown to the final shape, and during this step, the ink expands along with the preform to result in a container with printing on the highly-contoured surface.

A blow-molded container includes a container body having a body portion that forms a square shape in a cross-sectional view orthogonal to a container axis; and in-mold labels, which are integrally glued on outer peripheral surfaces of glued portions, ranging from corner surfaces to respective planar portions continuing on both sides of corner surfaces around the container axis, in body portion. Among front and back surfaces of in-mold labels, multiple recesses are formed over entire back surfaces, which are glued to the outer peripheral surfaces of the glued portions. When tensile elasticity of in-mold labels is E (MPa) and thickness of in-mold labels is t (mm), Et.sup.3 is 0.20 or less. When the radius of curvature of the corner surfaces is R (mm) and angle formed between the planar portions is () in a cross-sectional view of the glued portions, R.sup.2 is 45000 or more.

A blow-molded container includes a container body having a body portion that forms a square shape in a cross-sectional view orthogonal to a container axis; and in-mold labels, which are integrally glued on outer peripheral surfaces of glued portions, ranging from corner surfaces to respective planar portions continuing on both sides of corner surfaces around the container axis, in body portion. Among front and back surfaces of in-mold labels, multiple recesses are formed over entire back surfaces, which are glued to the outer peripheral surfaces of the glued portions. When tensile elasticity of in-mold labels is E (MPa) and thickness of in-mold labels is t (mm), Et.sup.3 is 0.20 or less. When the radius of curvature of the corner surfaces is R (mm) and angle formed between the planar portions is () in a cross-sectional view of the glued portions, R.sup.2 is 45000 or more.