The letters are to small but other than that is a good tool for bible study. I use this Bible when I teach and help me and my students to get a better understanding of what the author of the Sacred Text was trying to say.
This product is very nice. Physically it's just beautiful; right weight, right size, perfect feel in the leather, well-sewn. I had my initials put on it and that looks great as well.
The Bible versions are probably the two most-common Spanish Bible versions out there, and it really helps having them side-by-side. There are very sparse notes on the NVI and a small glossary for the RVR60 and NVI each by the end; this is not a study Bible, so you get just the biblical text and very little more. But I knew that before getting it, and for the uses I give to my physical copies of the Bible, that's just fine (I strongly recommend using a digital environment if you are going to study or read commentary anyway).
One important note is that the letter size in this Bible is more or less what you'd get by printing at font sizes 9 to 10, approximately. Some people may find that too small for day-to-day usage, but to me that's OK.
This is a very beautiful Bible, very useful by having two versions side by side, and I heartily recommend it to anyone having to preach or conduct Spanish Bible studies. It looks good, it delivers the Word effectively, and it is well priced - what more can one ask for!