Tweed day is celebrated on April 3rd of each year. Tweed is a rough, unfinished woollen fabric, of a soft, open, flexible texture, resembling cheviot or homespun, but more closely woven. It is made in either plain or twill weave and may have a check or herringbone pattern. Subdued, interesting colour effects (heather mixtures) are obtained by twisting together differently coloured woollen strands into a two- or three-ply yarn.
Tweeds are desirable for informal outerwear, being moisture-resistant and durable. Tweeds are commonly worn for outdoor activities such as shooting and hunting, in both Ireland and the United Kingdom. “Lovat” is the name given to the green used in traditional Scottish tweed. In Ireland, tweed manufacturing is most associated with County Donegal in the Province of Ulster.
Tweed is also commonly found covering vintage or retro guitar amplifiers, such as the Fender Tweed. Tweed has recently come back to fashion with high end stores and designers using it often.