It's been 7 months since I have used this product and I am putting in some updates with regards to the toughness of the product.
We all know these headphones are created and advertised with "Toughness" in mind. Unfortunately I found 4 physical weak spots in this product:
1. The leather"ish" material of the headband can be easily be scratched with your own nails. I could imagine when a cat accidentally scratched it, it would be a disaster and the look can be easily be ruined.
2. The sliding mechanism. Inside the headband that holds/encloses the sliding mechanism can easily snap-out and ruin the sliding mechanism when the headband is accidentally twisted like using the headphone while lying in bed. Also, when putting/wearing the headphones to your head the tendency is you will hold the headphones to the metal part that holds the speakers on both sides. This causes a lot of tension to the materials that holds/encloses the sliding mechanism inside the headband and can cause the sliding mechanism break apart. Also, it could probably "rip-out" from the soft fabric underneath the headband, that would be really ugly when that happens. When I noticed that, I was careful of holding the headphone from there on. But I was annoyed at that so what I did is I reinforced the material that holds/encloses sliding mechanism from the outside of the headband with 2 nylon cable ties at the edge of the sliding mechanism holder. The headphones feel more sturdy now no matter how carefree I handle it when wearing it.
3. The folding mechanism material can rust easily. I use this headphones when jogging and when sweat gets there, it can rust easily. So when I noticed that, I clean the folding mechanism with WD40. Not sure how V-Moda can improve this one in their future or next production of M100s.
4. The replaceable plastic part at both ends of the headband can easily CRACK (The one with 3 screws each where the L and R is printed). Mine has a crack already in both sides.
Of course I can have them replaced free of charge, but I live in the Philippines and it will be a pain to ship it back to have it replaced since there is no distributor here. Anyhow these are the things I noticed about this product and I hope they can address these in their next production or in the future release. I really enjoy these CANS the most and with that I use it the most for the past 7 months and I really love these headphones despite some material weaknesses. I don't abuse these headphones even though it is advertised as "Built like a tank". I just use it normally. But I wish I could be more carefree to handle it.