axle 58 for each opening 22 two brackets 60 are mounted to an inner face not labeled of an associated the base 20 and located on both sides of the opening 22 each bracket 60 includes a horizontal section 601 fixed to an inner surface of the top of the base 20 and an inclined section 602 fixed to the inner face of the associated side of the base 20 the pivotal hole 61 is defined in a section 603 between the horizontal portion 601 and the inclined portion 602 each pivotal pin 53 of each mounting plate 51 is pivotally received in an associated pivotal hole 61 to thereby allowing pivotal movement of the mounting plate 51 and the wheels 57 relative to the base 20 fig4 is a top view of the sunshade base 2 after assembly and fig5 is a bottom view of the sunshade base 2 after assembly fig6 is a sectional view of the sunshade base 20 wherein the wheels 57 are in their storage position with each mounting plate 51 covering the opening 22 and thus being flush with an associated inclined side of the base 20 when the user intends to move the sunshade base 2 the user may insert his fingers into the slot 511 and grasp each mounting plate 51 and pivot the mounting plate 51 outward in a direction indicated by the arrow in fig7 to a position shown by phantom lines in fig7 the bearing portion 52 of the mounting plate 51 and.