Features of the Ultimate Direction Women's Ultra Vesta Holsters for the Body Bottle 500s Front storage holds phone, fuel and valuables Sliding rail sternum straps XXX Mesh wicks away moisture and is soft to the touch Open side adjustment straps allow for customized Fit A mesh pouch for wet or voluminous gear with a compression bungee Easily accommodates our 50 oz and 70 oz reservoirs or any bottle