Best Protecter for 2011 Ringside Boxing Round 2 Cards

Don't know much about card protecters as I usually buy them individually than a box.
But I brought a box of 2011 Ringside Boxing Round 2 this year and pulled a Gatti Memorabilia card that I want too keep. I am just keeping it in the plastic box the cards came in at the moment. as those that collect this product know these cards are very thick

Whats a good protector for cards with this type of thickness?
Any links also to show me what I need

Here's how I've worked it out in the past.

A regular trading card = 20pt

Stack a bunch of regular cards next to your mem' card until you match its thickness.

If it takes 5 cards the its 100pt. 6 cards 120-130pt. 7-9 cards 180pt.

I generally go for the slightly thicker toploader to avoid any unnecessary pressure on the card. Then its a simple case of penny sleeve - toploader - team bag.

A one touch holder I find is more straight forward. I get either a 100pt or 130pt holder. Unless super thick it'll fit one or the other.

Thanks for the info