I purchased these for a an aerobic dance class, but they ran short on me, and many reviewers have said the same. So think you should be a 9M for better fit, from my experience. Hit every move and stay light on your feet in this lightweight cross-trainer with exceptional cushion and stability. BEST FOR: Dance fitness + Low-impact workouts PERFORMANCE TECH: N-Gage energy return foam for shape retention + cushioning on impact MADE FOR WOMEN FIT: Designed for a woman's unique foot shape with a narrower heel, roomier toe, and softer foot cushioning MATERIALS: Breathable mesh with faux leather overlays for extra durability + Padded heel for extra cushioning CLOSURE: Lace-up front for a secure fit INSOLE: Anatomical insole with extra arch + heel support MIDSOLE: Lightweight EVA for soft cushioning OUTSOLE: Ergonomically-shaped rubber sole for extra durability where you need it most + Pivot Point for smooth and easy turns WEIGHT: 206 g/7.2 oz per shoe HEEL-TO-TOE DROP: 6 mm BEST FOR: Dance fitness + Low-impact workouts PERFORMANCE TECH: N-Gage energy return foam for shape retention + cushioning on impact MADE FOR WOMEN FIT: Designed for a woman's unique foot shape with a narrower heel, roomier toe, and softer foot cushioning MATERIALS: Breathable mesh with faux leather overlays for extra durability + Padded heel for extra cushioning CLOSURE: Lace-up front for a secure fit INSOLE: Anatomical insole with extra arch + heel support