The innovative minds at High Power Airsoft have created the world's first fully biodegradable BB option, tested and confirmed by an accredited U.S Laboratory to conform to the ISO standard. These are an environmentally friendly, 100% biodegradable option that are perfect for outdoor fields and MILSIM events. HPA Biodegradable BBs break down naturally over time from various outdoor conditions such as heat, sunlight, moisture, and pressure. Each of these 0.28g BBs have gone through intense quality control to ensure they can withstand even the highest powered AEGs. The carrying bottle comes with a resealable cap that easily flips open to help pour BBs into the players speed loader or magazine with the help of the feeding lip. Have enough ammo for whatever may come your way and pick yourself up a bottle of these 0.28g Biodegradable Airsoft BBs from High Power Airsoft.