Definition: In this task, you're given reviews from Amazon's products. Your task is to generate the Summary of the review.
Input: Constantly fogged up and impaired vision. Ice crystals formed between the lenses at the end of my first day and were there the remaining days on my trip. Caught an edge and had a decent impact and the lens went flying off down the mountain and I had to retrieve it. Would not buy again.

Constantly fogged up and impaired vision. Ice crystals formed ...