Gaiam Soft Wrist & Ankle Weights for Walking, Pilates & Strength Training. Fits most ankle sizes: 5lb weights fit a 9-in. max ankle circumference, and10lb weights fit an 11-in. ankle size. Available in4 lb, 5 lb and 10 lb sets (sold as a pair), they provide an easy way to increase intensity during lower body exercises, core training, cardio workouts, and rehabilitation sessions.