Lacoste Mens Sport Fleece Tennis Sweatpants

is 100% original lacoste ?

Talla 5 se refere a large?...

most my jens/pants size are 32, will size 3 be the best fit for me?

I'm 6.1" skinny, I usually go for 31W 33L.. with joggers usually M fits but short while L is baggy but perfect length wise, what size should I get?