Spira® Footwear Sizing Chart for Women’s Genesis X
Average Street Shoe Size 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 12
Spira® Shoe Size 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11–12 12
Note: Our recommendation is to size up one half size from your standard shoe size