[Groop]"Bagging" comics

[MisterElie@aol.com]

This is Groo-related......

I've recently taken an interest in bagging my comics with better material.  
I've been interested in Bill Cole's Mylars.  Does anyone know, do they really 
work to preserve comics or is the standard $3.00 pack of 100 polybags 
adequate?  Are you supposed to create a seal in Mylars like you do polybags 
or leave the tops open?

I need to keep my collection of Groos safe!  It took so long to get them!

Elie