I saw a guy in the streets wearing the coolest cargo pants I have ever seen. They have the following specs:

• open pockets, that start just right below the knee and fall down to the end of the pants
• black, thickish fabric
• simplistic look
• colourful logo at the right butt cheek. It’s a rectangle with coloured letters including “M”, “A” and “S” in this order, but there could be other letters within

I’ll add a self drawn picture. Going half crazy looking for these: