Protein Keyâ„¢ Optimal Nutrition   Introducing the NEW 2.5 lb Protein Keyâ„¢! Like the original Protein Keyâ„¢ size (0.88 lb.), the 2.5 lb. size will be eligible for volume discounts and our Auto-Ship program discounts. And as always, free shipping on all Protein Keyâ„¢ varieties and sizes! Currently you can get 5% off any ProteinKey.com order with order code AFFPK.

Shop Now