ergonomic armrest 3d model

Ergonomic office armrest top surface, organic and smooth shape. Saddle-like form with a gentle central groove running lengthwise. Two raised rounded side lobes for forearm support. Fully symmetrical along the longitudinal axis. Soft transitions, no sharp edges, no holes. Minimalist industrial design, comfortable and modern. Solid object, uniform thickness, designed for 3D printing. single solid piece, no mechanical parts, no textures, no armrest stem