Instruction: Given the user's review, identify the user's sentiment from the listed options. Answer using one of the options.

Input:
I bought these boot to go with my GoFit Chin-Up Bar in spite of the reviews.  I wanted something less expensive than the other inversion boots that I've researched.
At first I tried them with no shoes on, but I guess I'm too heavy because the pressure the boots put on the top-center of my feet was causing too much pain to withstand for more than a minute or two.
I have to put on thick socks and my work boots to withstand the pain more than a couple mins.
My back is in better shape now though!  I don't have constant pain and discomfort anymore.  If you have good boots that protect the top of you feet well, this is a decent (not great), inexpensive option.

Options:
A: very positive
B: positive
C: neutral
D: negative
E: very negative
Answer: C: neutral