Maciejowka type cap (pattern known in the West as 'Breton' or 'Greek Fisherman' cap) made of linen cloth. A similar cap was worn by John Lennon (he wore a black one). For its best breathability cap has no lining, only a linen sweatband.
100% linen is a great choice for summer - lightweight, breathable and protects your head from the sun and it doesn't heat up. This cap is available in big xxl and xxxl sizes. Precise handmade craftsmanship from Sterkowski family-run manufacture.