The slyder storage system keeps your co2 inflation to hand where ever your bike goes, securely and conveniently storing your 25g co2 cartridges under your bottle cageallows you to carry 25g c02 cartridges with an inflation adapter fitted for quick accesssleeve prevents hands from freeze burnversatile mounting to frame or seat post, using bottle bossescompatible with dynaplug air tubeless repair and inflation kitsco2 cartridges not included