"Tires are a product you don't just jump into. With that being said, we worked hard to the FAF tires were right before we released them. Using input from our team, we came up with exactly the tires the riders wanted: Grippy, Durable, and Fast as F***! -Robo • Puncture resistant Kevlar belt • Tear resistant Silkworm technology • lightweight folding Kevlar bead makes them lite and foldable • Available in 20 x 1.95", 20 x 2.1", or 20 x 2.25" • More agressive tread on 2.25" version includes rim band weight: 1.95 = 13.5 oz 2.1 = 18 oz 2.25 = 21.2 oz