These large Velcro circles conveniently attach to the chest area of a sports shirt. You can secure your hydration tube to your shirt and get creative with attaching other gear as well. - Attach the white Velcro patch to your clothing - Wrap the black Velcro patch around the tube - Connect the Velcro patches together - Also works for carrying small soft flasks - The white patch stays in place even during machine washing (max. 40ºC) Coxa Velcro PatchesEasy attachment for soft flasks or hydration tubes for convenient access