Structure of a handle sleeve of a golf club

A handle sleeve of a golf club, comprising

• a rubber sleeve part;
• the rubber sleeve part being disposed around an upper end portion of a shaft of a golf club;
• the rubber sleeve part having elasticity;
• the rubber sleeve part having elasticity such an inner diameter as to be tightly secured around the upper end portion of the shaft;
• the rubber sleeve part having a recess portion on an outer side;
• and
• an outer covering part including:
• (a) an inner layer made of a same material as the rubber sleeve part;
• and
• (b) an outer grip layer;
• the inner layer and the outer grip layer being closely pressed and sewn together;
• the outer covering part being positioned around the recess portion of the rubber sleeve part;
• the outer covering part and the rubber sleeve part being stuck together by means of adhesive, which is applied over the inner layer of the outer covering part as well as the rubber sleeve part;
• the adhesive having already dissolved the inner layer of the outer covering part and the rubber sleeve part slightly before the outer covering part is positioned over the rubber sleeve part.