N-20 Studio is a brand created through the collaboration of designers Birgit Peerna and Helen-Mary Vartšun, focusing on the upcycling of leather leftovers. Their collection “x, y” brings together two different approaches—the same material, but distinct styles and technical executions. The material used in the collection mainly comes from leftover leather from the Estonian furniture and footwear industry, including pieces with natural imperfections. The designers emphasize the maximum use of materials and see production leftovers as an opportunity for creating new items. Working with leftover leather gives each piece a unique color and surface pattern, shaping the collection into ready-to-wear garments and accessories designed for everyday use. Birgit Peerna and Helen-Mary Vartšun participates in the Antonius fashion show in 2026. The designers also took part in the Antonius fashion show in 2025. In addition, Helen-Mary Vartšun participated in the Mood-Performance-Tants fashion show in 2024.