Lightweight sweatpants quality

I have both the mid-weight and lightweight sweatpants and my mid-weight ones feel way higher quality than the lightweight ones. The mid-weight ones are made in Vietnam while the lightweight ones in Canada. Does anyone know is this is how it should be? The cotton fabric also just feels different on the lightweight one. It feels kind of weak and susceptible to accidentally ripping but i’ve had lightweight clothing from other brands that have a strong, sturdy fabric but still feel lightweight at the same time. Is this normal for the sweatpants?