The Ultimate collection of Impact proof Cases for iPhone and iPads , Waterproof Apple AirPods and iWatch Case at best price from Catalyst. Free Shipping in USA. Shop Now! Catalyst is an innovative lifestyle accessories brand that creates iconic products to enable people to explore and share their world. Catalyst has continued to design and invent unique products that have won numerous best-in-class awards from organizations around the world. As a first mover, Catalyst often introduces new categories that refresh the CE market. Catalyst designed and manufactured the first and to date, the only Waterproof Case for AirPods, carried by Apple in more than 500 stores worldwide as well as on apple.com.