Dear Sabrina,
The key word is vinyl which is something you never want around collection 
objects- short or long term.  The dots are actually polyvinyl chloride and 
pick up whatever dirt that they come in contact with.  This is impossible 
to wash out and this dirt will susequently transfer to whatever is handled 
next.
I thought that these things were the greatest thing since sliced bread 
when they first came out years ago- especially for handling slippery 
glassware.  I have since learned otherwise.  Stay away from them.
Sincerely,
David Ryan
Registrar
Colorado Springs Pioneers Museum
www.cspm.org 

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