Portable roller device

A roller device, comprising:

• a core layer having a plurality of segments that are each respectively coupled to at least one other segment in the plurality of segments, the coupled segments forming the core layer having an outer surface and an inner surface;
• wherein each segment of the plurality of segments further comprises a plurality of interlocking protrusions disposed on a side facing an adjacent segment, the plurality of interlocking protrusions configured to interface with at least one other plurality of interlocking protrusions of the adjacent segment of the plurality of segments;
• wherein the core layer forms a tubular inner cavity free from any structure in the tubular cavity, the tubular inner cavity adjacent to the inner surface of the core layer;
• and wherein at least one segment of the plurality of segments further comprises a coupling mechanism having a releasable angular locking pin actuated by a pushbutton configured to engage and disengage an adjacent segment on the plurality of segments.