Topo Athletic Fli-Lyte 6 Road Running Shoes - Women's Sky/Navy 6.0 US. The updated upper provides increased comfort with a sleek and modern design. The 23 x 20 mm stack height offers an optimal balance between cushioning and ground feel. The ZipFoamTM midsole provides a lightweight and responsive ride. Specifications for Topo Athletic Fli-Lyte 6 Road Running Shoes - Women's: Manufacturer: Topo Athletic Gender: Female Age Group: Adults Heel Height: 23 mm Boot Style: Road Running Shoes Activity: Running Activity/Occasion: Daily Activity Seasonal/Temperature Use: Winter Midsole Material: Zipfoam Stack Height: 20mm Package Contents: Topo Athletic Fli-Lyte 6 Road Running Shoes - Women's Topo Athletic W086-060-SKYNAV: Fli-Lyte 6 Road Running Shoes - Women's Sky/Navy 6.0 US