Our vinyl-coated cage is specifically designed for holding the taller stainless steel bottles, without scratching or rattling. Its straight-back design allows the bottle to rest comfortably and securely in the cage. - Stainless steel cage with a black vinyl coating - Fits any size frame tube or seatpost with a Velcro strap - Will not scratch metal bottles or remove paint - TF-41 is capable of holding bottles up to 24oz - TF-42 is capable of holding standard Nalgene bottles - Made in the USA