Redspore variant of PF Classic! PF stands for Professor Fanaticus, a real OG in the game! This man was (allegedly) responsible for creating and distributing info on the PF tek which helped so freakin many people get into mycology in a simple and exciting way. In so many ways, I admire this man's initiative and strive to do the same for the hobby of microscopy. Redspore variants are pretty cool too, and this one is great for all experience levels. I would highly recommend this for beginners.