DESIGNED FOR YOUR BIKE (no “universal fits” at Twin Air – we have molds for 1500+ different model motorcycles dating back to 1965). WASHABLE AND REUSABLE (reusing a Twin Air filter 30 times is common). DUAL-LAYER FOAM made to our specifications, with cells that are evenly sized and distributed • MINIMIZED SEAMS made possible by a revolutionary micro-gluing process. GREASELESS SEALING RING. ASSEMBLED BY HAND and inspected for a perfect fit • PACKAGED IN A RESEALABLE AND REUSABLE BAG.