Indeed. My 1999 Crumpler is sticky, as are similar things from that era, but the clear windows on my ski jacket’s helmet cracked into pieces. My old 1980’s Walk

Indeed. My 1999 Crumpler is sticky, as are similar things from that era, but the clear windows on my ski jacket’s helmet cracked into pieces. My old 1980’s Walkman case did both on the same case with both materials as you suggested.