Blue Tie Dye Dress. It contains a round hem, soft and lightweight material with high stretch jersey. Contains spaghetti straps and is perfect for those upcoming spring and summer concerts and festivals! These are blue tie dye so each one is going to be a little bit different. This blue tie dye dress is made of 92% Polyester and 8% Spandex and is a very soft stretch material. This will be your new favorite go to dress!