ChampionMen's Sweatpants, Reverse Weave, Heavyweight Fleece Sweatpants For Men, 30

Any pilling?

I wear a size 34-36 waist so can someone tell me which size fits better medium or large?

Are the quality of these pants identical to those of the same name sold on the actual champion website?

If these are a Christmas gift can they be returned after if need be?