Meet Triad SHIELD AER ? a sleek, wearable air purifier that creates a safe personal breathing zone by repelling particles from your breathing space. Triad Aer brings to you Shield Aer. This amazing new product is our latest technology in personal protection. Wear it like a necklace or clip it onto a shirt or apron. Particles will bounce off of you creating a shield protecting your breathing space for up to 4 feet! Rechargeable and easy to use. You can also interchange the necklace with one of your own to create your own style.