HeyNutsEssential/Workout Pro 7/8 Leggings, High Waisted Pants Athletic Yoga Pants 25''

Do these have a gusset in crotch or just single seam?

I wear a 8 in lululemon what would I be in these?

Please please make a chocolate brown color! Is one coming? Devoted to these leggings and will buy more if you do! Thanks!

I'm 32 weeks pregnant, 5'5, around 150 lbs (125 pre-preg usually a m in leggings). would m in these work with my preg belly or should i size up to l?