A vintage bicycle dominates the upper half of this technical patent illustration, rendered in crisp white lines against a deep blue grid background, while detailed mechanical components and assembly diagrams fill the lower section with precision and clarity. The composition captures the methodical language of 19th-century industrial patents, with handwritten signatures and dated annotations completing the authoritative, historical aesthetic. Sewn from a durable canvas-like exterior with a soft lining and made to order, in three sizes up to one that fits a tablet. A catchall for toiletries, art supplies, or small electronics, carrying an independent artist's work instead of a plain zip bag.