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

Input:
Used these in hands and feet.  Worked well, kept hands and toes warm, the packets lasted at 8 hours.  I would recommend them if you easily get cold outside

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