The hydrapak propel reservoir 3l introducing the innovative new propel reservoir equipped with an easy to use squeeze bulb that sprays water at your command whether you39re dousing yourself cleaning your gear or sharing with a friend of course like all of our reservoirs it39s fast filling leak proof and fully reversible for easy cleaning power hydration at its best hydrapak propel reservoir 3l features material ulrta durable tpu body amp tube pressure activated squee