The perfect solution for that medieval layered look in the heat of summer! The pin-in linen half-sleeves can be used to brighten up your Frontlaced Gown with more color or to replace the kirtle or underdress typically worn with the gown. By the 15th century, Europe in the little ice age, and fashions reflected this with additional layers.  Although summers were still plenty warm in medieval Europe, no self-respecting lady would wander about with her arms bare so the half-sleeve became a popular compromise between the heat of the summer and the modesty of the era. To keep authenticity in colder weather, you can also layer these over the white sleeves of your underdress.