Mylar comic book sleeves are the gold standard for protecting comic books. The Library of Congress uses Mylar film and sleeves to protect historical documents. Mylar, a transparent form of polyester, is considered an “archival quality” product. If you use Mylar correctly to protect your comics, then they should last for a lifetime. However, Mylar is pricey. Still, there are many affordable comic book sleeves that are just as good as Mylar.
Affordable Sleeves Just As Good As Mylar
Most of the comic book sleeve products on the market are made of degradable plastics like polyethylene or polypropylene. Polyethylene lasts longer than polypropylene, and it is more flexible. However, both plastics will break down within three to five years and need to be swapped out.
On this list, you will find polypropylene comic book sleeve products. All of the sleeves on this list feature acid-free polypropylene. Most of them also feature accompanying cardboard backing boards as a part of the package. As long as you use these products correctly and seal them, then they are just as good as Mylar in the short term.
Here are eight comic book sleeves you should check out now.
1. Epakh 200 Silver Age Comic Book Bags and 200 Backing Boards (400 Count)
This product is just as good as Mylar comic book sleeves. It’s a great value if you just bought a large collection of comics or need to upgrade sleeves and boards for a current one. You get 200 polypropylene sleeves and 200 backing boards with each order.
The sleeves are made from durable polypropylene. The product weighs 6.43 pounds in total. Here are the dimensions of the product: 7.68 x 10.83 inches.
The manufacturer states that this product is optimal for use with the dimensions of Silver Age comic books only.
Buy 200 sleeves and 200 backing boards now at Amazon for $36.95.
2. Belifun 100 Current Comic Bags and 100 Backing Boards (200 Count)
Belifun is a well-known name to collectors. Their products are just as good as Mylar and a lot more affordable. The 2-Mil thick sleeves are made of durable, acid-free polypropylene. While the cardboard backing boards are also acid-free, the 3% calcium coating is only on one side.
The sleeves have a 1 ½” flap for extra protection. All 100 sleeves and 100 backing boards weigh over a pound. Here are the product’s dimensions: 6 ¾ “ X 10 ½ “.
Additionally, the manufacturer claims that this product is of “Archival Quality.” That means that it could supposedly protect your comics for years or perhaps decades if used properly.
Get 100 sleeves and 100 boards at Amazon now for $23.99.
3. Big Fudge 100 Comic Book Sleeves and 100 Boards (200 Count)
Big Fudge is renowned for their line of comic book protection products. The manufacturer’s archival-quality comic book sleeves are just as good as Mylar. This product comes with 3-Mil thick 100 comic book sleeves and 100 backing boards.
The comic book sleeves are made of durable, acid-free polypropylene. The backing boards also feature a 3% calcium carbonate coating. Additionally, all of the comic book sleeves feature an adhesive and resealable flap.
Here are the dimensions of the comic book sleeves: 7.25” x 10.5”.
Here are the dimensions of the backing boards: 6.87” x 10.5”.
These sleeves and boards are only optimal for use and fit the dimensions of Modern Age comic books post-1990.
Buy 100 sleeves and 100 backing boards for $36.99 now.
4. Platinum Protectors 250 Comic Book Sleeves and 250 Backing Boards (500 Count)
Platinum Protectors make quality comic book sleeves and backing boards that are just as good as Mylar. You can get 250 acid-free polypropylene comic book sleeves and 250 acid-free backing boards with each purchase.
Each sleeve is 2-mil thick and features a resealable flap. The dimensions of the sleeve is 6-7/18” x 10 1/2 “, and the backing board is 6-3/4″ x 10-1/2”. This product weighs over 4.5 pounds.
The manufacturer states that these sleeves and backing boards are of archival quality when used correctly. Also, you should only use them with Modern Age comic books. This is a great product for collectors with a large sleeve and board organization upgrade project.
Get 500 sleeves and boards now for $83.99 at Amazon.
5. Kosiz 200 Comic Book Sleeves (200 Count)
Kosiz’s comic book sleeves are just as good as Mylar, relatively speaking. You will have to switch these sleeves out within three years or so. So, they are great for first-time collectors or collectors in need of a quick, quality, and affordable upgrade.
These sleeves are made of polypropylene, and they are resealable. If you seal it and store it properly, the manufacturer says the sleeves are water-resistant. Here are the dimensions of the sleeves: 12.6” x 8.07” W.
Buy 200 sleeves for $12.99 now at Amazon.
6. SUNEZLGO 100 Comic Book Sleeves and 100 Boards (200 Count)
SUNEZLGO backing boards and comic book sleeves are just as good as Mylar. The acid-free polypropylene sleeves are 3-Mil thick. The backing boards also feature an acid-free coating. It must be noted that while the sleeves feature a flap, they are not resealable.
The dimensions of the comic book sleeves are 10.6 Inches x 6.96 inches. The dimensions of the backing boards are 10.5 Inches x 6.75 Inches. You get 200 stickers to use for your organizing needs.
You should only use Modern Age comic books with this product.
Buy 100 sleeves and 100 backing boards for $23.99 now at Amazon.
7. KKU 100 Comic Book Sleeves and 100 Backing Boards (200 Count)
You get 100 acid-free polypropylene comic book sleeves and 100 backing boards with each purchase. Each sleeve features a protective flap, but they are not resealable. The dimensions of each sleeve are 10.5 ×7.2 inches. The dimensions of each board are 10.5 ×6.77 inches.
You should only use Modern Age comic books with this product.
Get 100 sleeves and 100 backing boards for $32.99 at Amazon now.
8. Leffis 100 Comic Book Sleeves and 100 Backing Boards (200 Count)
Leffis’ comic book sleeves are made of acid-free polypropylene. The backing boards also feature a coating of 3% calcium carbonate, making them acid-free.
Here are the dimensions of the sleeves: 7.2 X 10.5 inches. The dimensions of the boards are 7 x 10.5 inches. The sleeves are thick; your comics will enjoy complete protection from the elements as long as you seal and store them correctly. While the sleeves are not resealable, they are thick and durable.
Buy 100 sleeves and 100 boards now at Amazon for $33.99.
Assess Your Comic Book Protection Needs
I recommend that you use Mylar to protect your most valuable comic books. Use them for every comic in your collection if you can afford them. However, you can substitute acid-free polyethylene or polypropylene as an affordable substitute for larger, less valuable comic book collections.
Polypropylene and polyethylene comic book sleeves will break down after a few years. You must swap them out every few years. Only buy the acid-free versions of this product when possible. Also, keep them out of direct sunlight; polyethylene and polypropylene do not protect your comics from UV damage or discoloration like Mylar.
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