The CycleOps Trainer Tire is for use on your home trainer only. The Trainer Tire is ultra durable and extremely quiet, so you can train at all kinds of hours and not bother anyone. The CycleOps Trainer Tire comes in 700c x 23mm only. Product FeaturesType: trainerMaterial: Size: 700 c x 23 mmBead: foldingFoldable: yesWeight: Recommended Use: trainer use onlyManufacturer Warranty: 1 year