BIRKENSTOCKADERERROR Boston Flap

The Boston Flap, offered in ADERERROR’s distinctive Ultra Blue and an earthy honey tone, introduces an exaggerated upper flap that structurally reimagines the classic silhouette. The flap is fixed using white whipstitch elements. Both styles utilize deconstructed elements and are finished with ADERERROR’s signature zigzag embroidery, underscoring the brand’s refined, conceptual approach. - Upper: Classic Suede Leather featuring a flap and contrast stitching - Footbed: Anatomical shaped BIRKENSTOCK cork-Latex Footbed - Sole: EVA outsole - Branding: ADERERROR branding in the heel cup - Packaging: Exclusive BIRKENSTOCK/ADERERROR box with branded dust bag Material details about product materials Upper material: Suede Suede is a split leather with a napped finish. It has a velvety surface and is very soft to the touch. It also boasts a high moisture absorption capacity. Suede is softer and more flexible by nature and does not have the same stability as smooth leather. The stability of suede also varies from hide to hide. This does not constitute a material or production defect. Insole: Natural leather Natural leather can be recognized by its untreated surface. BIRKENSTOCK purposely does not treat surface grains and other characteristic features. BIRKENSTOCK uses sturdy leather with a thickness of 2.8 to 3.2 millimeters as upper material. Footbed material: Cork Cork is a sustainable material extracted from the bark layer of the cork oak. This natural product is insulating and offers very good cushioning. Outsole: EVA EVA (ethylene vinyl acetate) is a high-quality, very light, elastic material with extremely good cushioning. As a result, it smooths out slight irregularities in the floor and ensures that every step is softly cushioned.