I use this to make waterproof checklists and signs. I print it with my HP color laser printer and it prints without melting or any issues like that. It really works. It is made of plastic fibers, so it's waterproof. It's more tear-resistant than paper or card stock, but, if it begins to tear, it can tear the rest of the way pretty easily. I don't think it's particularly sunlight-resistant.The 10 mil product has a stiffness like a business card.Would I recommend this? heck yes.Just for reference this is a bit heavier weight and would make a good cover. It is heavier than I like for daily note-taking. However, it does its job wonderfully. Worth the money for the amount of paper it will save you. I use it with a free OCR app to take notes for college classes and save them online.Despite being advertised as being compatible with all laser printers, this paper did not print well at all on my Xerox Workcentre (OEM toner). The toner came out blotchy and the color was entirely incorrect. I'm not sure what settings would have produced a better result and tried to look up information on what I could do to improve the print quality, but there was no helpful information on the company website. I spent a lot of time trying to find a professional looking sturdy option for badges and I was hoping this would work. While it was whiter than the Teslin paper I also tried, I wouldn't print well at all. We ended up going with printing on regular cardstock to use with badge holders since those badges looked much more professional.Amazing product. I use the 10mil for waterproof business cards and the 4mil and 7mil for pages for my dive log book. Please note, this stuff will not work in a jet printer (just as they warn you in the ad), but it works amazingly well in a laser printer. I printed up my customized dive log pages, filled one out with a standard Parker pen and let is sit in a bowl of water for a while. No smearing, no water spots, no problems, it just worked as perfectly as I had hoped. In my opinion, the 10mil is sufficient for a business card (if waterproof is one of your goals), the 7mil makes a great (and very impressive and substantial) dive log book page, and the 4mil works just as well, but is slightly less stiff. Overall, absolutely A+, the only negative is that this stuff is not cheap.Just got it looks got a bit thick so not sure how it will print as in go through the laser printer, so I think I could have stepped down to the 7mil even 4mil which in future I will try. So far so good will update. Gave it a 3 star so far.Did my printing on it and it when through the laser fine, didn't have to pick thick setting either. Printed very well and durable.Next I am using it around water and soil for some custom plant markings so if it does not go brittle and stands up for more than 1 season, it will get a 5 star.I love this paper! I used it to create a flashcard activity. I can easily wipe it off between uses and it maintains it's sturdiness and print. Well worth the expense!An amazing product. It is truly waterproof and has a great feel to it. I use the 10mil for waterproof business cards (really handy with my recent move to a career in scuba equipment design) and the 4mil for dive book log pages. You must use a laser printer (as they warn you, a jet printer page will smear) but the product is rock solid if you do use the laser. It has been such a thrill to find a product like this (just didn't know it existed until recently), could mot be more impressed or happier. It is not cheap, but absolutely worth the price.Terraslate is the best. I use it in conjunction with my Rocketbook for reusable forms that I use for my business. I've saved a ton of paper using the reusable paper for notetaking, etc.