“I love my new BAM Double Layer Silk Viola Bag! It arrived very quickly after I placed the order with Simply for Strings, and fits my 15.5" inch viola really well with some room to move. My viola was always a little small for its (BAM) case, so the BAM Viola Bag now gives it more protection. I wouldn't recommend if your viola is already snug in its case - maybe go for the Single Layer Bag.”