Brooks Glycerin 21 Running Shoes - Women's Zephyr/Violet/Green 8.5. The neutral Glycerin 21 women's running shoe provides a plush ride thanks to more DNA LOFT v3 cushioning than before plus a new more streamlined upper that delivers structure and breathability. Specifications for Brooks Glycerin 21 Running Shoes - Women's: Manufacturer: Brooks Gender: Female Women's Shoe Width: Medium Footwear Type: Shoes Features of Brooks Glycerin 21 Running Shoes - Women's Supreme softness Improved fit Smooth stable transitions Package Contents: Brooks Glycerin 21 Running Shoes - Women's Brooks 1204081B612.085: Glycerin 21 Running Shoes - Women's Zephyr/Violet/Green 8.5