They are heavier, the aramid/kevlar is kinda like rough wool, maybe like old army clothing from WW1, a bit scratchy, not too bad though. You will sweat off the bike in summer, but it's nice & cool on the bike. It's better than leather or textiles. Armour is bulky, especially the hips, you also need to account for the size of the hip armour as you need to belt up around your waist, not your hips as is normal for normal jeans, if you don't, you''ll have no protection around your hips, but then you may want to drop them to your hips when off the bike so you don't look like your grandad. Knee armour is ok, a bit nobbly if you look for it.