Synthetic resin bottle with a handle

A synthetic resin bottle with a handle, comprising:

• a biaxially drawn and blow-molded bottle made of a polyethylene terephthalate resin, wherein the bottle has a recess that has been caved in at the rear of the bottle and a vertical projecting wall disposed in a central portion of a bottom of the recess;
• and
• a handle, an injection-molded product of a polyethylene terephthalate resin, which is fitted firmly to the bottle as an insert, wherein the handle comprises:
• a pair of fitting beams disposed in parallel to each other in a standing position;
• connecting arms that are bent and connected to upper and lower ends of the fitting beams;
• a grip plate integrally disposed at the rear of the handle to connect between the pair of fitting beams through an intermediary of the connecting arms;
• and
• embedded projecting portions, which are disposed on the pair of fitting beams and are used as firm undercut fittings to be fitted to the central portion of a bottom of the recess of the bottle, wherein the connecting arms, a part of the fitting beams, and the embedded projecting portions comprise handle inserts that are fitted to the central portion of a bottom of the recess on both sides of the vertical projecting wall of the bottle under the condition that many lateral, narrow grooves are disposed on front sides of the embedded projecting portions, away from the rear, facing the recess of the bottle.