New Balance Women's WR1400 Glow-in-Dark Running Shoe 100% Synthetic Imported Rubber sole Glow-in-the-dark details No-sew mesh and TPU upper REVlite foam cushioning 10mm heel-to-toe drop 7.1 oz (201g) New Balance makes a performance trainer more vibrant and visible with their glow-in-the-dark edition of the MR1400 running shoe.