Wrangler AuthenticsAuthentics Men's Big & Tall Classic Twill Relaxed Fit Cargo Pant

How many pockets do they have?

Does anyone know what the closure is

is the closure a rivited metal button or a plastic button sewn on ?

The pants I'm wearing right now, are a size 44W but when I use the measuring tape, it seems like the pants have 49"W. How do I choose right size?