Umbrella hooks Isofix mounting

I tried an Isofix hook for umbrellas but it didn't work on my car, so I designed with Freecad one that works on the Subaru XV and has a design that I like. These hooks are also useful for holding bags in place. Update: This hook is 30mm wide, if your car's Isofix slot is narrower you can try the model I made for VW which is 24mm widehttps://makerworld.com/it/models/1265491-umbrella-hooks-isofix-mounting-for-vw#profileId-1291143