These tights are perfect. They are soft and do not snag. My daughter is 12 and she is rough on her tights. She dances 3x a week. She still (no matter how many times I tell her) yanks them on too roughly and they have yet to rip or pull. The transition foot is great because she can take the tights up and over her foot to her ankle so she can wear regular shoes or sandals to dance class, then she can just pull the foot down over her toe to put her ballet slippers on. That way she doesn't dirty up the foot of the tights by putting her nasty sneakers on over the tights to go to dance. :)
I have a lingerie bag hanging in the laundry room and she throws them in there after dance. I wash when the bag gets full, so I estimate each pair of tights gets washed about every other week (she has several pairs). They hold up in the wash very well. I wash in the bag, cold water wash, and I lay flat to dry on one of those expandable drying racks.

My 3 year old also has these tights and we've had the same great experience with those. She is even more rough on her tights and they get washed way more often, yet they hold up just as well!