How can I get rid squishy Upper Arms(Im A Male)?

On my upper arms it is squishy on all sides of my upper arms(biceps,triceps,inner arm(side that is facing my body, does any1 know what this spot is called?), and outer arms.). How can i make my arms more tighter. I been doing biceps curls, concentration curl curls for my biceps and its still squishy, is that normal? does it take alot of time to make biceps not squishy with dumbbells