Brooks Run Happy Adrenaline GTS20 Limited Edition running shoe. Women's size 6. Hit the streets with a smile in Brooks' Run Happy road running shoes. The women's Brooks Adrenaline GTS 20 is soft and supportive with “Run Happy” covering it from heel to toe. Featuring DNA LOFT cushioning throughout and GuideRails® Support to limit excess movement of your feet and knees. They’ll make you feel happy all over. Only worn once. In excellent, near new condition. Arrives in original box, packaged with care.