The Ultimate Direction Body Bottle 500S Insulated will keep fluids cold or warm for your extended time on the trail. Made in taste-free PEEVA material. No longer will your water taste like plastic! PEVA is considered to be a healthier alternative to PVC products since it is a non-chlorinated vinyl material. 2mm EVA foam insulation protect your fluids from body temperatures and outside temperatures. An updated flask designed offers a new ergonomic shape for more comfort at your shoulder. The Body Bottle is the easiest way to carry your fluids. Fits any UD Vest, Vesta, waistbelt or Clutch. Collapses fully to a tiny size when empty. Soft Silicone push/pull bite valve is easy to operate on the fly. Weight: 2.3 oz. / 65g. Volume: 16.9 oz. / 500 ml. MATERIALS Polyethylene Vinyl Acetate (BPA-Free). 2mm EVA foam insulation