Protect your collectibles from the effects of aging! Mylar-D bags come in 1, 2, and 4 mil thicknesses. Mylar is the strongest plastic available with 1/3 the strength of steel. It's also the most stable plastic with zero off gassing, and it does not absorb moisture like poly bags.
100x stronger than Polypropylene
300x more effective at resisting gases (oxygen decomposition) than Polypropylene
Buy protection that will last 100 years vs. 3-5 years for Polypropylene bags
Crystal clear with no waves or ripples
Excellent resistance to humidity, insects, fungus, mold, mildew, acid, oils and greases.
National Archives and Library of Congress use Mylar-D bags for preservation.
We sell Mylars bags and boards in just about any quantity. We can prorate them if you only want a few to try out, and we have price breaks at 50 and 100 bags. You can add additional quanitites once the item is in your cart. For example if you want 200, order 100 and change quantity to 2 in the cart.