These like-new ALL-PRO Contour Foam adjustable weight Ankle Weights for exercise are 5 pounds for the pair and are the best in the business.
Cushioned flaps protect your ankles and ankle padding protects your Achilles tendon. Unlike some ankle weights which might produce more pain and injury than gain, ALL PROs put the extra design, foam padding, and material into user safety and good health.
Inside each cuff there are TEN 1/4 pound solid iron weights which can be removed. You could start with one 1/4 pound weight and gradually work up 1/4 pound at a time when you're ready. Each weight is inside a cocoon of material that hold it snugly in place.
Gradual increase is the best approach. Don't be too macho and do your interval training the first day with 10 slugs per leg.