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

Input:
Update 09/02/16:
After a couple of years, the black band finally wore through at the center, mostly from abrasion against the edges of the door strap.  The red band got so stretched out it can't be far behind.  I used those two bands for pretty much every workout, though.

The great part - I e-mailed BMP about the replacement band warranty, Rich responded in a day, and had my replacements in the mail immediately at no cost to me!  I just got them a couple days later.  Fantastic service, and a great product I'll continue to use for my home and travel workouts!

Original Review:
I'm a lifelong weightlifter and bought these to take on a several-month trip where I wouldn't have access to a gym.  They worked great once I got used to the difference of using resistance bands instead of regular weights.  I mostly used the red, black and blue together for heavier exercises like standing bicep curls (the bands passing under my feet to anchor them), took off the blue for tricep pulldowns and lat rows, used just the red for front and lateral delt raises, and so on.

Coupled with other bodyweight-only exercises I got a full, toning workout while traveling.  I didn't build up muscle, but I stayed in good shape.  And if you roll the bands up carefully, the whole bag flattens down nicely to fit in the front outside pocket of a suitcase.

The anchor-strap was great with almost every doorway I used it on, too...there were a couple that were obviously too weak to support the kind of stress I was going to put on them.  And you have to place it so the strap won't slide towards you the first time you pull, or you might do very minor damage to the wood or paint.

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