A method of fabricating wetsuits and boots or gloves, made from rubber sponge material especially used for water sports, adheres each piece of the composition of the wetsuit or boots/gloves to be free from the problems of leaking or breaking caused by sewing or stitching. The method makes the finished garment not only strong and flexible, but also watertight so that the garment wearer feels dry and comfortable. The new method comprises the step of making an adhesion to form a cover, with the width of 1-25 mm and thickness of 0.3-1 mm, on the glued seams of the garment outer and/or inner surface in order to make each piece of the garment adhered completely with no sewing or stitching. The new method includes the additional step of putting the adhered panels of the garment into an oven at a temperature of 80-130° C., and for a time of 5-60 minutes, to make the adhesion vulcanized and cross-linked. That step forms a soft and firm cover of the seams and makes the finished products equivalent in strength to sewing or stitching but avoids the defects of leaking, breaking or discomfort caused by needle holes, thread breaking or unraveling from sewing or stitching.