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

Input:
I use this item with P90x and I get a great workout with it.  I'm pretty fit and this seems to be just right.  I do wonder if it is shorter than the bands used in the P90x videos though.  I don't think it's possible to do squat x presses with them the way it's done with bands on the P90x video but I can slip the door attachment under the bottom hinge of a door to make it work.  The door attachment, by the way, is very cool.  I don't think it was ever intended to go under a door but it fits very securely on all other sides.  Like I said, if I need tension from the bottom I just stick it below a hinge.  I haven't had it long enough to report on the longevity but I have been using it for a few weeks and I don't see any signs of it tearing or wearing out.  I definately don't have anything negative to say about the product.

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