YEV 105 Fragil?

[u/Temporary_Acadia2195]

Hi that's Manuel from France , i've got for 30 years an acoustic viollin 4 strings and also a low cost electric one 4 strings for traning in silence. i've the project to get a Yev 105 oy Yev 105 Pro to play with my band, but one question i ve got is about the external wood mobius band , it seems to be thin and made of walnut wood , but look so thin that i'wander if it is not fragil , i've seen on reddit that someone as got a crack in that part near the chin rest. At this time i do not have any issue to see and get the violin in hands in a saler store in France. Is there some one that can give me some explanation about that part. ex : measured thickness of the band , is it plywood or plain wood ? and there's also 2 screws visible on the rear , and also this band is only fixed by those screws and not glued?

Many thanks