Variable resistance refillable exercise dumbbell

A variable resistance collapsible exercise apparatus adjustably fillable with a flowable weight material and comprising;

• an elongated generally hollow container having an outer surface, an interior volume and a longitudinal central axis, longitudinally spaced apart top and bottom generally bulbous end sections and a reduced circumference waist section between said bulbous end sections such that said container is generally dumbbell-shaped;
• said container being made of a semi-flexible plastic material such that said container is collapsible upon removal of weight material therefrom to substantially reduce the size thereof for storage and transport;
• said bottom bulbous end section including a generally flat base wall oriented generally perpendicular to said longitudinal central axis whereby said container may stand upright on said flat base wall for filling of said container with flowable weight material;
• a container fill opening in said container extending between said outer surface and interior volume for filling said container, said fill opening being positioned on said top bulbous end section opposite said waist section and at the topmost position on said container upon standing of said container on said flat base wall whereby said container may be filled full of flowable weight material through said fill opening;
• cap means for removably sealing said container fill opening;
• an arcuate handle extending between and connecting said top and bottom generally bulbous end sections, said handle having an outer surface arranged generally tangential to said top and bottom bulbous end sections for minimum outward extension of said handle from said bulbous end sections;
• grip means on said handle means for facilitating gripping of said handle means;
• a weight scale on said container including a plurality of generally parallel lines arranged generally parallel to said flat base wall and perpendicular to said longitudinal central axis, and at least one weight amount marking adjacent said lines, thereby being operative for measuring flowable weight material input into said container through said fill opening upon positioning of said container on said flat base wall;
• and
• a flexible strap extending between and connecting said top and bottom generally bulbous end sections opposite said handle whereby said container may be removably attached to a user of said exercise apparatus.