Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Combat boot zipper broke

Ordered this for the means of a broken combat boot - zipper broke due to a kick start of a dirt bike. Working better than origional zipper did in the first place. Remains tight and seems to be well crafted. Having tried other straps that fell apart. This was the only one that had any balls to it. Over all the strap is over 15 inches and is well suitable for the intended use.