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Eyelets

ventilation holes

Crown ventilation holes. Metal = industrial look. Embroidered = softer, no oxidation.

Crown ventilation
Definition

Holes in the crown to allow air circulation. Two versions: metal (industrial look) or thread-embroidered (softer aesthetic, no oxidation).

Standard position: one per panel, near the top close to the apex. Metal eyelets are in brass or treated aluminium. Embroidered eyelets are made by punching the fabric and bordering the hole with dense stitches. Important: low metal eyelets can mechanically interfere with industrial embroidery frames.