Petzl Covers for Vertex/Strato Accessories. Specifications for Petzl Vertex/Strato Accessories Covers: Manufacturer: Petzl Size: One Size Features of Petzl Vertex/Strato Accessories Covers The EASYCLIP system allows the user to mount a face shield on helmets in the VERTEX and STRATO range Compatible helmets: VERTEX VERTEX VENT VERTEX CUSTOM STRATO STRATO VENT STRATO CUSTOM sold since 2019 (SKUs: A010 A010XY A020 A020XY) Compatible face shields (featuring EASYCLIP system): VIZIR (A015AA00) VIZIR SHADOW (A015BA00) VIZEN (A014AA00) VIZEN MESH (A021AA00) Package Contents: Petzl Vertex/Strato Accessories Covers Petzl A010LB00: Covers for Vertex/Strato Accessories