FSL Safety Earmuff 34db NRR

I just received this earmuff by DSL. I received this product for free for my fair and unbiased reviews. It's basically a universal earmuff for all uses. Overall it's great...
Let's first look at some pros:

1. It is super comfy
2. It muffles sound out well
3. It's extendable
4. 3 Year Warranty!
5. Folds very nicely

However, there are some cons:

1. Can be a little tight at first (gets better with use)
2. Doesn't block sound out completely. You can still hear everything, but it's muffled.
3. No left right ear differentiation

Overall, the build quality of this thing is incredible, and it does its job well. 

Pictures below;