Check out Evelyn’s Tights at http://www.justforhorsin-round.com/products.htm
. She does make a full seat tight, uses Ultra Suede which is very flexible
& lightweight. I don’t use the full seat ones so I can’t make a
recommendation there, but I do use her regular ones with just the knee patch
& have been very happy with them. I do use a full sheepskin saddle cover as
well.