Later that afternoon I went to another lecture, about ice, in all its varieties: frazil, grease, brash, shuga, pancake, white, drift, rafting and fast.
Generally resistant to animal and vegetable fats, oils, greases, ozone, heat, and strong oxidizing chemicals. Chlorobutyl has lowest permeability of all the synthetic rubbers.
Pizza boxes contaminated with grease, electronics that aren't processed at standard recycling facilities, even the likes of Christmas lights, animal carcasses, and bowling balls.
Or I could highlight on the benefits that you would never ever have to grease and service your metal bike chain again, saving you time and money for maintenance.
Witness the disappointment on the faces of tourists, lured by the promise of a great British delicacy, only to find they've happened upon the bad version, all grease and soggy batter.