The sleeveless spanish tunic according to the pattern of queen Eleonore's saya.
Sources:
1. Así vestían los reyes de la Reconquista (resource in spanish)
2. Leonora of Castile's Dress at Marc Carlsons page
3. Leonor's saya - Recreating a 13th. c. Spanish dress
Related researches:
1. Costume in Christian Spain: XIII century garments
2. Her garment's description by Isolda Renard (resource in russian)