Premium Artist Portfolio Bag, Black Canvas, Half Sheet

An art portfolio bag exists to move large sheets without folding them — and a fold in a finished drawing or a sheet of watercolour paper is permanent. A flat carrier is the difference between work that arrives ready to show and work that arrives creased down the middle.

Size it to the largest sheet you actually carry, not the one you carry most often — a portfolio one size too small forces the corner fold you bought it to avoid. Load it flat rather than upright so the sheets rest on the long edge, and slip a sheet of board in with thin paper, since a soft bag protects against creasing but not against a knock. It doubles as flat storage at home, which is where most drawings are damaged rather than in transit.

A premium half-sheet bag in black canvas. Canvas is heavier and stiffer than plain cloth, so it holds its shape upright and resists a knock better — the difference you notice is that the bag stands on its own rather than slumping, which matters when it is loaded and leaned against a wall.

• Half sheet — for 50x70 cm paper
• Black canvas, premium
• Carries large sheets flat, without folding
• Load flat and slip a board in with thin paper